WISCONSIN. 209 



corn as it comes into full tassel, the strength of salt solutions under 

 field crops, results of Warington's nitric nitrogen studies at Rotham- 

 sted, method of determining soluble salts and nitric nitrogen in field 

 soils, sensitiveness of the methods used in the study of nitric nitrogen 

 and soluble salts, and possible error in results due to the methods. 



Bvlle&in 86, pp. 10. — Analyses of Licensed Commercial Fertilizers, 

 1901. — The text of the Wisconsin fertilizer law, notes on the sources 

 of fertilizing ingredients in fertilizers and on the valuation of fertili- 

 zers, and analyses of 5 samples of fertilizers sold in the State during 

 the year. 



Bulletin 87, pp. 31, pis. 4, figs. 8. — Native Plums. — This bulletin 

 considers the following topics: Methods of plum culture, culinary 

 uses of native plums, varieties, blooming period of plums, thickness 

 of the skins, and the longevity of American plums. Some data are 

 also presented on the self-fertility or sterility of native plums. 



Special Bulletin, March 1901, pp. ^, fig. 1. — The Prevention of Oat 

 Smut. — A popular description of oat smut and methods of prevention. 



Annual Beport, 1900, pp. 360, pis. H, figs. 63, maps 2. — In addition 

 to a report of the director on the work and publications of the station 

 during the year, lists of exchanges and acknowledgments, and a finan- 

 cial statement for the fiscal year ended June 30, 1900, the following 

 work is reported in greater or less detail: A comparison of whole 

 corn and corn meal, made with 2 lots of 14 pigs each; a preliminary 

 experiment with 16 pigs in regard to the effect of certain foods on the 

 production of lean meat; a test, with 30 pigs, of the feeding value of 

 rape; tests, with 47 breeding ewes, to compare different rations for 

 winter feeding, especially to determine the value of corn fodder and 

 silage; an experiment with 16 cows, lasting twelve weeks, to study the 

 proportion of grain feed to coarse fodder best adapted for the econom- 

 ical production of milk and butter; official tests of 110 Holstein, 7 

 Guernsey, 2 Shorthorn, and 8 Red Polled cows; investigations of the 

 cause of error in- some incorrect tests with turbine Babcock testers, 

 the effect of temperature on tests of skim milk by the Babcock test, 

 and the determination of fat in sweetened condensed milk by the Bab- 

 cock test; the calculation of dividends for milk and cream at the same 

 factory; tests of a patent churn in comparison with a barrel churn; a 

 description and tests of a method for the determination of salt in but- 

 ter designed for factory use; investigations to determine the effect of 

 different quantities of rennet in cheese ripening; experiments in mak- 

 ing silage under laboratory conditions for the purpose of studying the 

 changes which occur in the formation of good silage; a description of 

 a form of apparatus devised at the station for conducting experiments 

 in the respiration of vegetable tissues, particular^ for the study of 

 the phenomena attending the production of heat in silage; investiga- 

 tions, under commercial conditions, conducted for the purpose of retest- 

 H. Doc. 334 14 



