822 EXPERIMENT STATION RECORD. 



The main reliance is based upon Arata's test, the other tests men- 

 tioned being- employed either to confirm the results or to supply evi- 

 dence in cases where that test fails. This is made b}' boiling- 100 cc. of 

 the liquid to be tested for 10 minutes with 10 cc. of ]0 per cent potas- 

 sium Insulphate and a piece of white wool or woolen cloth which has 

 been previously heated to boiling in a very dilute solution of sodium 

 hj'drate, and thoroughlv washed with water. If after washing the 

 wool with boiling water and dr^-ing, it remains dyed and the color is 

 not changed b}' ammonia, or if changed is restored bj^ washing, coal- 

 tar dyes, chiefly of the azo-group, arc indicated. 



The influence of carbon bisulphid and common salt on the 

 losses of nutrients and the character of the fermentation of 

 ensiled fodders, I. Kaluchn and S. Parashchuck {Zap. jVovo-Alea- 

 undr/ Iihsf. SrlsJi. Khoz. i Lyemr.^ 1899, pp- '^'^^' <'^>^- ^'^ SelsJ,'. Klioz. t 

 Lyesov.^ 196 {1900), Fih.^p. IfJO^ J^71). — The experiments were made 

 with red clover, cabbage, and fodder carrots, which were stored in 

 excavations in the ground. The close packing of the fodders was found 

 to aid their preservation, the structure of the fodders being maintained 

 and an agreeable odor produced; the loss of organic substances was 

 reduced except that of proteids, whose decomposition was considerabl}' 

 increased. Close packing caused an increase in the formation of free 

 organic acids. Loose packing, on the other hand, was not favorable 

 to preservation, the structure of the fodder being- lost, the fodders 

 becoming covered with mold and acquiring a disagreeable odor, and 

 the loss of organic substances increasing except in the case of proteids. 

 The addition of carbon bisulphid contributes to a fine preservation of 

 both closely and loosely packed fodders. Their structure is maintained 

 and the}" acquire an agreeable honey -like odor after the carbon bisul- 

 phid has evaporated. The addition of carbon bisulphid considerablj' 

 diminishes the loss of all organic nutritive substances, especially when 

 the fodder is loosel}" packed, and arrests in a considerable measure the 

 development of free organic acids. — p. fireman. 



On carnosin, a new organic base of meat extract, W. Gulewitscji and S. 

 Amiradzihi [Ba-. Deal. Chfiii. (JeneU., .33 {1900), No. 12, pp. 1902, 1903). 



Qualitative test for boracic acid, E. W. and M. L. AVade {Jour. Amcr. Chem. Soc, 

 £2 {1900), No. 9, p. 619). — Thi.s depends upon tlie characteristic red color inijiarted 

 to turmeric paper by the vapor resulting from boilinitr 0.1 <rm. of the subntance with 

 0.5 {•('. of hy(h'ocliloric acid and 10 cc. of wood alcohol. 



Paris green and London purple in Montana, F. W. Tuaphaoen [Montana Sta. 

 Bui. 25, pp. 7) . — The author made analyses of 6 samples of J'aris jj;reen and 2 samples 

 of London purple bought of dealers in the State. It was found that arsenious oxid 

 was present in Paris green in the proper proportion and nearly all in an insoluble 

 form, the largest amount of soluble arsenious oxid in any sample being 1.29 per cent. 

 Of the 2 samples of London purple which were analyzed 1 contained 50.89 per cent 

 combined arsenious oxid, 0.54 ])er cent free, while the other contained 34.51 per cent 

 ivrsenious oxid combined and 2.07 per cent free. 



