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the channel. The “Rob Roy” was the first steamship to make the trip between Dover and Calais. This was in 1820, but at that time steam power was in its infancy, and the “Rob Roy" did not greatly reduce the time of passage. During the later developments of steam power, larger steamers were used, and each, in turn, lowered the record a little.

On June 27th, 1903, the "Queen,” a new turbine steamer, was commissioned, and at the speed of twenty-three knots an hour has aided materially in making the trip from Dover to Calais endurable. This steamer has reduced the time of the trip from pier head to pier head to fifty minutes. The noise made by turbine en

The following is an excellent description of the “Queen,” given by our consul, Mr. J. B. Milner:

The new vessel is 310 feet long, with a moulded breadth of 40 feet and a depth of 25 feet, and has a complete awning deck

The machinery consists of Parson's turbines, three being fitted having three lines of shafting. In maneuvering, the center shaft runs free; the two side shafts then take the place of ordinary twin screws, and, as has been demonstrated in the “Queen Alexandra," the maneuvering power is in every respect as good as in ordinary twin screws, while in the going astern there is none of that objectionable

vibration which is to be felt in the most maneuvering power demands a word or modern twin-screw balanced arrange two of explanation. Inside the exhaust ment.

end of each low-pressure turbine cylinThe main engines in the "Queen" con der is placed an astern turbine, controlled sist of three separate turbines, each driv by slide valves operated by combined ing its own line of shafting, the center steam and hydraulic reversing engines. turbine being high-pressure and the two These valves admit steam directly into side ones being low-pressure. When the low-pressure turbines, or into the regoing ahead in ordinary work the steam versing turbines within same, for going is admitted to the high-pressure turbine; ahead or astern. The center turbine unand, after expanson there, passes to the der these circumstances revolves idly in low-pressure turbines and then to the con a vacuum, its steam-admission valve bedensers, the total ratio of expansion be ing closed and its connection with the ing about one hundred and twenty-five low-pressure turbines being closed by fold, as compared with eight to sixteen non-return valves. The centrifugal cirfold in triple-expansion reciprocating en culating pumps, and the air pumps, all gines. At the ordinary steaming speed of of which are in duplicate-one set for the "Queen" the revolutions of the cen each of the two condensers—are driven ter shaft are about 700, and of the two by independent double-cylinder steam enside shafts about 500 per minute. This gines; and the feed-water is supplied to high rotative velocity implies the adop the boilers by two feed pumps, controlled tion of propellers of small diameter, and by a float tank into which the air pumps the utmost care is exercised in balancing discharge the condensed water. There them so as to obtain the full advantage are also special pumps for wash-deck and of the absence of vibration secured by fire service, as also the various pumps for the adoption of the turbine principle. oil and water circulation, as required by

When going full speed ahead all the Parson's system. Steam is supplied to lines of shafting, central as well as side, the turbines by two double- and two sinare in action ; but when coming alongside gle-ended boilers, Scotch cylindrical type. a quay or maneuvering in or out of the One noteworthy feature on board the harbor, the outer shafts only are used, "Queen" will be the absence of hot cinthus giving the vessel all the turning and ders and dust, which are—more especimaneuvering efficiency of a twin-screw ally to ladies—such a nuisance on board steamer. The means for obtaining this most steamers fitted with forced draft.

Readers of the interesting article on Wireless Telegraphy in this month's issue will no doubt be surprised to see how quickly the Marconi system has passed the experimental stage of development and is fast becoming a factor in the commercial world. The well-known firm of Munroe & Munroe of New York is providing the company with ample capital to place this famous invention upon a most substantial basis. Wireless telegraphy is a new and already important force in commercial life.

Spencer, and Jules Verne's "Clipper of the Clouds,” which was imagined as raising itself by electric fans. This new ship has a balloon shaped like a torpedo, which is capable of raising it to a height of 100 feet, and beyond that it will be raised or lowered by means of a fan driven by the motor, which also operates the propeller.

The capacity of the Baldwin Locomotive Works is equal to five locomotives a day; but during last April, 107 complete locomotives were turned out, averaging in weight 125 tons and valued at $2,750,000. This company employs 15,000 men, and the weekly payroll amounts to

William Beedle of Waltham Green, England, has been building a new airship which is a compromise between the bal




Devoted to a review of new and timely books on Scientific, Technical, and Industrial subjects;
and a presentation in condensed form of a select list of the most important current Magazine
Articles and Manufacturers' Catalogues in the field of Engineering, Architecture, and other
branches of Applied Science.


measure of popularity as it becomes betThe New Epoch: as Developed by the Manufac

ter known. ture of Power. By George s. Morrison, Boston. Houghton, Mifflin & Co. 134 pages. $1.50.

How to Judge Architecture. By Russell Sturgis, A.

M., Ph. Ď. Illustrated. The Baker & Taylor Co., In this work, the author has given an New York. 221 pages. $1.50. exceedingly interesting review of our Few books have been published on the century's industrial achievements, and subject of architecture more valuable to the strides civilization has made since the ordinary reader than this. It is forman learned to manufacture power. It tunate that such a popular book should is questionable if the average person is have been written by one who is justly reasonably familiar with the changes acknowledged to be a leading critic. He which have taken place in the industrial informs us as to Greek, Mediæval, the world during our own generation. “The Revived Classic, Nineteenth Century, and New Epoch” takes up this subject; and other architecture. His text is clear, in a series of well-written chapters, gives concise, and to the point; it is aided by the reader a comprehensive review of the a gratifying large number of illustrations. entire field. “The New Epoch” deals We are glad to have brought together with a subject the general public is anx

in both text and picture, comparisons ious to know something about, and is cer between the early Grecian temples and tain to meet with a favorable reception. the great Gothic cathedrals, and even

between these and modern commercial Home Mechanics for Amateurs. By George M. Hop and residential buildings.

kins. Munn & Company, New York, 370 pages; 320 illustrations. $1.50.

The Steam Turbine. By Robert M. Nielson. 163 pages, We know of no book equal to "Home

with figures and full-page plates. Longmans, Green & Mechanics for Amateurs.” It is well Co., London and New York, $2.50. written, well illustrated, and, above all, The second edition of this valuable book easy to understand. "Home Mechanics"

has come from the press of Longmans, covers a broad field dealing with wood Green & Co. That a second edition working, metal spinning, silver working, should be issued is an indication of the making model engines, and a hundred present interest in the steam turbine, as other subjects full of live interest to ama well as of the high character of the work. teurs. This work written by one of the The author, believing that the steam turmost noted amateur experimenters, will bine is destined to occupy a more impormake a strong appeal to boys. It is full tant position in the future, has given in of descriptions of all the different kinds

one connected treatise a thorough disof machinery that never fail to fascinate cussion of the subject from a historical, a boy's heart. It has had a large sale theoretical, and practical point of view. and will continue to enjoy a substantial The size of this edition is much larger

430 pages.

than the first, as the author has discussed ample, the kitchen is but a work room, the recent developments in Europe and and while it should be kept cheerful and the United States, such as the Stumpf, comfortable, the “tall Japanese screen to the Schuiz, and the Seger turbines. A conceal the stove when no cooking is chapter is devoted to temperature-en- going on" means an expenditure of time tropy diagrams and their application to and strength, and perhaps, space, that motors, which throws light on the theory would be unnecessary. Few women stay of the steam turbine from the thermo in the kitchen nowadays longer than to dynamic point of view. The author has do the actual work. also given the results of many series of There is a store of ideas in the chaptests and has taken care to make the ter on bedrooms, mainly advocating values recorded as accurate as possible. simplicity, although the suggested arThis book is the first extended treatment rangements are often complex; still, by on the steam turbine, and as such, is a sifting out, here and there, these comwork of much interest.

plications, one finds much that will add

to the comfort of a home and its guests. Homes and Their Decorations. By Lillian Familton The quaint, old-fashioned styles sugFrench. New York. Dodd, Mead & Co.

gested for dining rooms make one wish $3.00.

to refurnish, and to reproduce Miss This is a book for home-makers. The French's arrangements; and the chapter author has presented her subject in near on “Floors and Their Coverings" is one ly every detail of household arrangement, of value and interest. from the drawing-room of the wealthy While Miss French is full of fads and to the tiny kitchen of the flat-dweller. prejudice in the wide range of her enThe interest of every woman is drawn thusiasm, the reader cannot fail to be to a work of this character, for no matter benefited by a careful study of her book. where she lives, woman naturally builds a home.

Light Waves and Their Uses. By Albert A. Michel

son. The University of Chicago Press, Chicago, Illinois. Miss French is "trying to help the be 164 pages. $2.00. wildered householder to see clearly what This book contains a course of eight lecresults she has been striving for, and tures delivered before the Lowell Instihow to go to work to obtain them. tute at Boston in the year 1899. In these Good taste in style and coloring may lectures the results of the investigations prevail in homes of modest incomes, with which the author has been engaged while there is no possible excuse for in for the last twenty years are presented in harmonious furnishings and decorations language as free from technicality as posin the establishments of the millionaire. sible. The first chapter contains 2. discusShe insists that every woman should sion of wave motion, and shows that the know how to give an air of cheerfulness most important characteristic of waves and welcome to a home. It is perhaps is their ability to produce interference rather an instinct than to be acquired phenomena. The other lectures deal with by books or teachings, for the meaning the methods which have been devised for of a home comes from the fitness of the making use of the interference of the surroundings to the individual associa waves of light in the production of a tions and history of its inmates; its dear natural standard of length, in analyzing est possessions are often an inheritance the vibrations which a source of light of the past, rather than the selection of emits, and in measuring extremely micostly furniture.

nute distances and angles. Illustrations and pen-and-ink sketches “These lectures, although they lead to are scattered profusely throughout the the very frontier of physical knowledge, work, giving to the reader the arrange are written in a style readily comprehensment and ideas of certain rooms, and ible to anyone of average education in styles of furniture and hangings that physics; and will be found very useful, please the writer's taste. We rather not only to specialists, but to those who think that this taste is for over much wish to keep informed of recent scientific

Physical Chemistry in the Service of the Sciences. treatise upon electrical matters. It covers

By Jacobus H. Van't Hoff. The University of Chicago
Press. 123 pages. $1.50.

a very broad field, and therefore cannot This volume is one of the decennial be expected to treat exhaustively from a publications of the University of Chi theoretical standpoint any of the many cago, embodying a series of nine lec subjects taken up. The large number of tures delivered by Professor Van't Hoff diagrams with clear and concise explain 1901, prefaced by Alexander Smith, nations, constitute the most valuable who is responsible for the English ver

feature of the work. Among the many sion. The frontispiece is a portrait of

subjects discussed are bells, annunciathe author.

tors, fire and burglar alarms, telephones, These lectures present in a semi-popu- telegraph, gas lighting, electric lighting, lar form the somewhat new and difficult

transformers, motors, generators, switchsubject of Physical Chemistry and Chem boards, storage batteries, etc. In the istry of Space. The work is scarcely latter part of the book is a section on detailed enough to warrant its use as a

Useful Facts and Formulas; and the textbook, but it will find ready sale to

book concludes with a set of tables on those who already are possessors of properties of wires, fusing currents, etc. Van't Hoff's more extended treatises, The Practical Engineer's Pocketbook. This little

pocketbook (34x572 inches, 600 pages) is published by and who wish to have, in compact form, the Technical Publishing Company. 75 cents. a resumé of some of the more important The Derry-Collard Co. of New York principles of physical chemistry. This have the exclusive rights of sale in this is an extremely readable book, interest country. The subjects covered are subbeing sustained from first to last.

stantially the same as those in other The chapters on "Physical Chemistry mechanical engineer's pocketbooksand Physiology” are particularly interest notes on boilers and accessories, useful ing, taking up the theories of solution, tables, steam engines, pumps, steam turosmotic pressures, and the specific action bines, gas engines, refrigeration, machine of chemical ions in the physical metabol design, shop work, etc. The directions for ism, the second chapter taking up the making blue prints are unusually good; subject of enzymes and their effects as formulas for black or blue lines on white catalytic agents tending toward chemical

ground are given. In the back of the equilibrium.

book is a diary for 1904. This diary In the chapters on Geology, some

a convenient notebook, as thing of the chemistry of space is dis sketches can easily be made on the cussed, the formation and structure of cross-section paper. When one considers geological salts, and the influence of

the contents and flexible leather cover, heat and variations in temperature upon the price, 75 cents, seems very low. In crystallization.

fact, this is the best mechanical pocketThe book will commend itself particu book for the price that we have ever larly to teachers and advanced students. To one inquiring for the first time into The Practical Engineer's Electrical Pocketbook. this subject, it will, however, be found This book is bound in the same style as too much abridged to be particularly the mechanical pocketbook (the Practical helpful. The book is neatly bound in

Engineer's Pocketbook). It is also pubred cloth, in quarto form, and is pub lished by the Technical Publishing Comlished at $1.50.

pany and sold in this country by the

Derry-Collard Co. of New York. Modern Wiring Diagrams and Descriptions. A

Handbook of Practical Diagrams and Information for Although many of the tables are the Electrical Construction Work. By Henry C. Horstmann

same as those in the Practical Engineer's and Victor H. Tousley. Fred J. Drake & Co., Chicago. 157 pages. $1.50.

Pocketbook, this one is devoted largely This book is put up in a neat and to electricity—measurements and measattractive form, and can be conven uring instruments, methods of wiring iently carried in the pocket. It contains and wire tables, construction and operain a small space an unusual amount of tion of generators and motors, alternatvaluable information in such form as can ing currents, batteries (primary and secbe readily applied. It partakes of the ondary), lighting systems, etc. Price 75 nature of a handbook rather than of a cents.




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