688 



EXPERIMENT STATION RECORD. 



In the year 1878 only 47 samples were received for examination. 

 The numbers received daring succeeding years were as follows: 



Summa7-y of station work. 



Tlie number of "control firms" who gave the farmers the right to free 

 analysis was as follows : 



Number of control firms. 



Besides this annual routine analytical work the station has carried 

 out a series of scientific practical investigations, among which are the 

 following reported by Dr. Grete in articles published for the most part 

 in Landwirtschaftlichcs Jahrhuck der Schiceiz, 1887-88: Experiments 

 concerning the x>roper time to cut hay; Investigations of the composi- 

 tion of Swiss litter plants; Investigations concerning liquid manure; 

 Experiments concerning the preservation of green food by means of 

 carbon bisulphid; Concerning the extract in wine;' Determination of 

 phosphoric acid by titrating with molybdic acid;^ Report on the results 

 of fertilizer experiments conducted in Switzerland in 1885 and 1886; 

 and Investigations of the Swiss barks used for tanning.^ 



iBer. dent. chem. Ges., 1880, p. 1171. 



2Ibid., 1888, p. 2762. 



3 Mitt. Schweiz. Controlanstalt forst. Versucbsweseus, 1, No. 1. 



