Gill's technological [afterw.] Gill's scientific, technological & microscopic repository; or, Discoveries and improvements in the useful arts, a continuation of his Technical repository, by T. Gill, Volume 4 |
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Page 30
... portion of the gummed water employed . When we have thus brought the gummed water to the desired consistence , it must be passed through a sieve into the marbling vat , to the height of an inch , as we have be- fore said . At every The ...
... portion of the gummed water employed . When we have thus brought the gummed water to the desired consistence , it must be passed through a sieve into the marbling vat , to the height of an inch , as we have be- fore said . At every The ...
Page 42
... portions of flesh which may still adhere to them . This operation requires great care , and consider- able practice , to detach them cleanly , and without injuring the skins . At this time also they shave and equalize the thickness of ...
... portions of flesh which may still adhere to them . This operation requires great care , and consider- able practice , to detach them cleanly , and without injuring the skins . At this time also they shave and equalize the thickness of ...
Page 47
... portions , in order to give the skins two successive dips . They put the first half into a turning vessel , of a construc- tion similar to that we have above described for washing the skins in , and then turn it eight or twelve dozen ...
... portions , in order to give the skins two successive dips . They put the first half into a turning vessel , of a construc- tion similar to that we have above described for washing the skins in , and then turn it eight or twelve dozen ...
Page 48
... portion of colour has also less brilliancy . In order to extract the remainder of the colouring matter , the Morocco leather - dressers add to the residuum of the bath an excess of muriate of tin , or alum , which causes it to ...
... portion of colour has also less brilliancy . In order to extract the remainder of the colouring matter , the Morocco leather - dressers add to the residuum of the bath an excess of muriate of tin , or alum , which causes it to ...
Page 58
... portion of water ; they must be shook up from time to time , during the space of six weeks , and be then distilled ... portions ; and they add a few drops of water to them , whilst pounding them , to re- tain them the better under the ...
... portion of water ; they must be shook up from time to time , during the space of six weeks , and be then distilled ... portions ; and they add a few drops of water to them , whilst pounding them , to re- tain them the better under the ...
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Common terms and phrases
acetate affixed alcohol alum alumine ammonia animalcula apparatus appear barytes beautiful become bees body boiler Carpenter Chiana colour compound eyes contained copper cornea county of Middlesex covered crystals curious Dated Dec degree deposit dissected dissolve distillation drained dyeing Editor effect eggs employed evaporation extract exuvia eyes filtre flame furnace furnished ground heat hive improvements inches insects instruments iron larva larvæ lenses likewise lime liqueur liquid magnified manner manufacturers means microscopic objects Middlesex minute mixture mordant Morocco leather morphium muriate narcotine nitrate nitrate of silver nitric acid observed obtain opium oxide perfect piece placed plate possess potash precipitate prepared proboscis produced pupa quantity remains render salt saltpetre scales shown in fig side skins slips of glass soluble solution species sufficient sulphuric acid surface tained thin ticks tion tube Val di Chiana vessel washing whilst
Popular passages
Page 205 - The column they composed, my friend was informed, extended five hundred miles; and so compact was it, when on the wing, that like an eclipse it completely hid the sun, so that no shadow was cast by any object, and some lofty tombs distant from his residence not more than two hundred yards were rendered quite invisible.
Page 153 - A critic- fly, whose feeble ray scarce spreads An inch around, with blind presumption bold, Should dare to tax the structure of the whole. And lives the Man, whose universal eye Has swept at once the...
Page 153 - In vain, or not for admirable ends. Shall little haughty ignorance pronounce His works unwise, of which the smallest part Exceeds the narrow vision of her mind? As if upon a...
Page 27 - Within the small dimensions of a point, Muscle and nerve miraculously spun, His mighty work, who speaks and it is done, The invisible in things scarce seen reveal'd, To whom an atom is an ample field...
Page 350 - Because every living thing, from man down to an ephemeral insect, pursues the bee to its destruction for the sake of the honey that is deposited in its cell, or secreted in its honey-bag. To obtain that which the bee is carrying to its hive, numerous birds and insects are on the watch, and an incredible number of bees fall victims, in consequence, to their enemies. Independently of this, there are the changes in the weather, such as high winds, sudden showers, hot sunshine; and then there is the...
Page 27 - Contrivance intricate express'd with ease, Where unassisted sight no beauty sees, The shapely limb and lubricated joint, Within the small dimensions of a point ; Muscle and nerve miraculously spun, His mighty work who speaks and it is done...
Page 81 - Because like a watch it always cries click ; Then woe be to those in the house who are sick : For, as sure as a gun, they will give up the ghost, If the maggot cries click when it scratches the post. But a kettle of scalding hot water injected Infallibly cures the timber affected : The omen is broken, the danger is over ; The maggot will die, and the sick will recover.
Page 233 - In order to divide the cake into smaller pieces, the cake is placed on a sharp steel anvil, called Tagliulo, which has the edge uppermost, and a stroke of an edged hammer is given on the upper surface of the cake...
Page 201 - March, the wind having been for some time from the south. In the middle of April their numbers were so vastly increased, that in the heat of the day they formed themselves into large and numerous swarms, flew in the air like a succession of clouds ; and, as the prophet Joel expresses it, they darkened the sun.
Page 202 - The whole transformation was performed in seven or eight minutes' time; after which, they were a little while in a languishing condition; but as soon as the sun and air had hardened their wings, and dried up the moisture that remained after casting off their sloughs, they returned again to their former greediness, with an addition both of strength and agility. But they did not...