growing brush as a preliminary step to the clearing. These animals do excellently on this new land, destroying all growing brush in a season. They also seed the soil with clover so that adequate pasture comes in around the stumps. By the use of stock, the hard-wood stumps are rotted out more rapidly through tramping of the soil, and the final clearing process rendered less difficult.

FIG. 47.-MARSHFIELD BRANCH STATION

On this experimental farm of 80 acres will be worked out the farm problems of this section, the soil of which is a fine-textured silt loam.

At Marshfield, the farmstead buildings have been consolidated at one point, a good forage and stock barn built, and other small outbuildings constructed. This coming season this station may be considered as being fairly well equipped.

County demonstration stations.-Marinette County took the necessary steps this last year to organize the third county demonstration station, which was located on the site of the old temporary substation at Crivitz. The success of the work already done led the county board to feel that a more permanent investment would be desirable. Additional land was therefore leased by the county so that there is now available 55 acres in all, part of which is virgin soil of the Plainfield sand type.

At the Rusk County Demonstration Station at Conrath a new tract of cut-over land of 80 acres has been exchanged or a portion of the original lease. This is being stumped and

broken for use, accurate figures as to this expense being kept. During the year a commodious cottage for the foreman has been erected by the lessors, and a barn is now under construction for the proper housing of a demonstration dairy herd.

No material changes of a physical character have been made in the plant at the Douglas County Station.

The value of these demonstration farms is indicated by the large number of visitors who come to these places throughout the year to learn more particularly of the work.

At the new station at Conrath, which is on the outskirts of a new community of only about 150 persons, 215 farmers and 120 prospective farmers visited the farm last year, while the entire number of visitors aggregated 550. At Superior, 102 farmers, 1,190 persons intending to take up agriculture, 100 school children accompanied by teachers, and over 1,000 additional people came in direct contact with the work. At Crivitz, the attendance was over 400. Of these, about 100

were intending purchasers of land, and 150 came for specific information on various agricultural matters.

PUBLICATIONS

During the fiscal year, a considerable volume of publications has been issued by the Experiment Station. Of the general series of bulletins, Nos. 232 to 240 inclusive have been distributed, also four circulars of information, and four research bulletins. The exhaustion of the editions of a large

FIG. 49. THE RUSK COUNTY DEMONSTRATION STATION A year ago this was wild, cut-over land. Many farms are being made out of just such tracts.

number of our bulletins issued previously has required the reprinting of those for which the demand is more or less continuous.

Much of the work of the Experiment Station that is of immediate application is brought directly to the attention of farmers through the medium of the Press Service. Technical papers prepared by the staff which may embody the purely scientific results of the station are also published in the regular scientific periodicals. The following synoptical list of such publications is here presented:

A Method for the Differential Staining of Fungous and Host Cells-R. E. Vaughan, Ann. Mo. Bot. Gard., 1, 241.

Comparative Efficiency for Milk Production of the Nitrogen of Alfalfa Hay and the Corn Grain (Preliminary observations on the effect of diuresis on milk secretion) E. B. Hart and G. C. Humphrey, Jour. Biol. Chem., 19, 127.

Observations on the Isolation of the Substance in Butter Fat which Exerts a Stimulating Influence on Growth-E. V. McCollum and Marguerite Davis, Jour. Biol. Chem., 19, 245.

The Value of the Proteins of the Cereal Grains and of Milk for Growth in the Pig and the Influence of the Plane of Protein Intake on Growth-E. V. McCollum, Jour. Biol. Chem., 19, 323.

Influence of Growth on Rations Restricted to the Corn or Wheat Grain-E. B. Hart and E. V. McCollum, Jour. Biol. Chem., 19, 373.

Acidosis in Omnivora and Herbivora and its Relation to Protein Storage-H. Steenbock, V. E. Nelson, and E. B. Hart, Jour. Biol. Chem., 19, 399.

Forms of Sulphur in Plant Materials and Their Variation with the Soil SupplyW H. Peterson, Jour. Amer. Chem. Soc., 36, 1290.

The Occurrence of Methyl Alcohol in Corn Silage-E. B. Hart and A. R. Lamb, Jour. Amer. Chem. Soc., 36, 2114.

A Preliminary Report on Fruit Infection of the Peach by Means of Artificia Inoculation with Cladosporium carpophilum from Peach Twigs-G. W. Keitt, Phytopathology, 4, 49.

The Migration of the Germ Cells in Amiurus nebulosus-Freda M. Bachmann, Biol Bul., 26, 351.

Elimination of Sources of Contamination in Milk-W. D. Frost, Amer. Vet. Rev., 44. 476.

A Pipettometer-W. D. Frost, Amer. Chem. Soc., 36, 1785.

Bacteriological Control of Public Milk Supplies-W. D. Frost, Wis. Acad. Sci. Arts and Letters, 17, 1305.

A Quantitative Chemical and Physiological Study of Nutrient Solutions for Plant Cultures-W. E. Tottingham, Physiological Researches, 1, 133.

A New Method for the Determination of Soil Acidity-E. Truog, Science, 40, 246.

Experiments on the Control of Certain Barley Diseases-A. G. Johnson, Phytopathology, 4, 46.

97.

Problems and Progress in Plant Pathology-L. R. Jones, Amer. Jour. Bot., 1.

Variation in Oxyurias―S. B. Fracker, Jour. of Parasitology, 1, 22.

Report of the Soils of Northwestern Wisconsin-F. L. Musbach and others, Wis. Geol. and Nat. Hist. Survey, 31.

The Struggle for Game Conservation and Game Breeding Foci-A. C. Burrill, Trans. Wis. Acad. Sci. Arts and Letters, 1914.

Bacteria Concerned in the Production of the Characteristic Flavor in Cheese of the Cheddar Type-Alice Evans, E. B. Hart, and E. G. Hastings, Jour. Agr. Res., 2, 193.

The Relation of the Action of Certain Bacteria to the Ripening of Cheese of the Cheddar Type-E. B. Hart, E. G. Hastings, E. M. Flint, and Alice E. Evans, Jour. Agr. Res., 2, 193.

The Number and Growth of Protozoa in Soil-J. M. Sherman, Centbl. Bakt.. 41, 626.

Die Valerg aldehyd und Amyl alkoholgärung der Methyläthyl brenz TraubensäureC. Neuber and W. H. Peterson, Biochem. Zeitschr., 67, 32.

Zur Biochemie der Strahlen Wirkmegeur III-C. Neuberg and W. H. Peterson. Biochem. Zeitschr., 67, 63.

PUBLICATIONS OF THE EXPERIMENT STATION

The following brief summary of each of the Station publications will give an idea of their nature.

BULLETINS

Bulletin 232.-Fitting Yearling Wethers and Lambs for Exhibition. (G. C. Humphrey and F. Kleinheinz, pp. 26, figs. 11.) Practical directions for selection, fitting, and showing yearling wethers and lambs accompany a statement of the results of trials covering six years in which the values of various grain mixtures for fitting wethers were compared.

Bulletin 233.-Wheat Growing in Wisconsin. (E. J. Delwiche and B. D. Leith, pp. 22, figs. 8.) A discussion of wheat raising in Wisconsin, including types of soil adapted to its culture, rotations for wheat, cultural methods, and yields of different varieties.

Bulletin 234.-Rural Social Centers in Wisconsin. (C. J. Galpin, pp. 38, figs. 20.) Since the land-worker does not come into close contact with many people, he is handicapped in the development of his social institutions. The rural social center is the means of overcoming these disadvantages. Many suggestions are made on the basis of the rural school, club, church, and municipal centers already operating in Wisconsin.

Bulletin 235.-Soiling Crops vs. Silage for Dairy Cows in Summer. (F. W. Wolf, G. C. Humphrey, and A. C. Oosterhuis, pp. 16, figs. 2.) The results of trials carried on with the Station dairy herd in which the value and economy of corn silage versus soiling crops were compared, show that silage is as satisfactory as soiling crops from the standpoint of the production of milk and butter fat. It can be produced and fed at less expense on the average Wisconsin farm. Bulletin 236.-Soy Beans-An Important Wisconsin Crop. (R. A. Moore and E. J. Delwiche, pp. 20, figs. 7.) The soy bean promises to become a leading crop on the sandy soils of Wisconsin. For seed, hay, pasture, silage, and green manuring it may be grown with profit and advantage to the soil. Variety tests, conducted during 1899-1913 at Madison and the substations show that, if intended for seed Wisconsin Early Black is the best for the northern half of the state. Ito San or Medium Early Green is recommended for forage.

Bulletin 237.-The Control of Diseases and Insects of Tobacco. (James Johnson, pp. 34, figs. 10.) Wisconsin tobacco growers and packers suffer a large annual loss from diseases and insects. A knowledge of the cause and method of prevention of the losses which occur in the seed bed, field, and curing house, as here given, will enable growers and packers to prevent much of this waste.

Bulletin 238.-Agricultural Cooperation. (B. H. Hibbard, pp. 31, figs. 2.) There are over 1,500 farmers' cooperative companies in Wisconsin, the most common being butter and cheese factories and telephone companies. This bulletin discusses the factors upon which depend the success of cooperative enterprises, and gives information concerning their organization and management. The text of the Wisconsin law relating to cooperative associations is given, and also the articles of incorporation and by-laws under which a cooperative cheeseproducing association is operating.

Bulletin 239.-Three Creamery Methods for Making Buttermilk Cheese. (J. L. Sammis, pp. 24, figs. 7.) Large amounts of buttermilk are wasted each year in Wisconsin creameries which could profitably be made into buttermilk cheese by curdling buttermilk with heat, draining the curd, and adding salt. This bulletin discusses three methods of making such cheese and states its value as a food