260 



of the orofjinic matter in the uiitieatod straw was digested by animals, 

 Aom 70.7 to 71.1) \mY rent was digested iiom treated straw. The 

 experiments with regard to the nutritive value of cellulose, an account 

 of which was given \u Experiment Station Ifecord, vol. ii, p. (J13, are 

 referred to. 



(2) Control Station; Dr. Tli. P/clfrr, director. — This station reports 

 analyses and tests of 687 samplesof fertilizing materials, feeding stufts, 

 foods, seeds, etc. Microscopic examinations have often been of service 

 in detecting the adulteration of feeding stutfs. Tlie addition to rice 

 meal of so-called protein meal, a by-product from the manufacture of 

 starch, was noticed to a considerable extent. 



Halle; (1) Agricultural Institute of Unircrsity; Prof. Julius Kiihn^ 

 director. — Field experiments were made on the eftect of the continued 

 use of each of several methods of culture and of diflerent fertilizing 

 materials; on the means of combating the beet nematodes: and on the 

 influence of root tubercles in tlie assimilation of nitri)gen by leguminous 

 plants. Tests of varieties of plants, experiments on the prevention of 

 the loss of nitrogen from nninures, aiul studies on the improvement of 

 exact methods of iield experimentation are also reporte«l. Fee<ling 

 experiments with milch cows are to be undertaken during 1801, 



(2) Agricultural-Chemical Experiment IStaiion; Prof. M. Maercker^ 

 director. — An abstiact of the report of this stati«>n, which is under the 

 auspices of the Central Agricultural Society ()f the Prussian Province of 

 Saxony, was given in Exi>erimcnt Station llecord, vol. ii, p. 7r)l>. 



Jlildesheim; Dr. Karl Miiller, director, — The work of this station 

 included critical examinatictns of 'J..~»70 samples of artificial fertilizers, 

 feeding stufl's, seeds, et<'. 



Tnsterhurg; Dr. 11'. Hoffmeister, director. — Besides the detective «nd 

 general analytical work of this station, scientific investigations have 

 been carried on with a view to devising a method for tlie quantitative 

 sei)aration of the ditlerent forms of wood gum, cellulose, and incrusting 

 substances, and studies have been made of the sugars formed from the 

 ditlerent w(>od gums. 



Kiel; (1) Agricultural K.vperiment Station; Prof. A. Fmmerling, 

 director of the agricultural-chemical division, and Dr. M. Schrodt, director 

 of the dairy division. — The total number of samples examined in the 

 chemical lalmratory was 2.1 11. of which 1.17<» were in connection with 

 the fertilizer control and .■>47 in connection with tin' control of feeding 

 stuffs. Experiments were also iiKide on the determination of the fat in 

 linseed cake, using an a]>])aratus devised at the station for drying in 

 a stream of illuminating gas: on the estimation (tf the percentage of 

 horn in bone meal; on the changes in composition and the percentage 

 of fat of freshly mown grasses: and a large number of grasses from the 

 Province of Schleswig Ilolstein were analyzed. The chemical division 

 ])roi)oses in 1S!)1 to carry on studies as follows: (1) Tliorough micro- 

 scopic and chen)ical investigations of the palm nut an«l the feeding 



