B. W. Bull on Emulsine and its Composition. 85 



show that the substance precipitated by alcohol has a fixed com- 

 position. The analyses were made from emulsine of four differ- 

 ent preparations, dried at 100° C, a process which required sev- 

 eral days, from the tenacity with which it retained moisture. 

 No. 6, was dried at 130° C. The analysis No. 5, was made from 

 emulsine prepared in the following manner. The fresh almond 

 emulsion thoroughly agitated with ether, to dissolve the oil which 

 was present, was allowed to stand in a closely stopped vessel till 

 the liquid had evaporated in two parts, which occurred in the 

 course of a few days. The upper portion, a solution of the oil 

 in ether, was a thick opaque somewhat gelatinous mass. The 

 under watery liquid was filtered off and immediately precipitated 

 with alcohol. Its composition will be seen not to vary materially 

 from that of the others. 



I. -354 grm. substance containing 23*78 pr. ct. of ash, equal to 

 •2698 grm. ash free, gave with chromate of lead -435 grm. car- 

 bonic acid and 170 water. 



II. -565 grm. substance containing 3579 pr. ct. of ash, equal to 

 •3607 grm. ash free, gave with chromate of lead -5825 grm. car- 

 bonic acid and -233 grm. water. 



III. -499 grm. substance containing 35-79 pr. ct. ash, equal to 

 •320 grm. organic matter, gave with chromate of lead -5015 grm. 

 carbonic acid and -2125 grm. water. 



IV. -5475 grm. substance containing 35-79 pr. ct. ash, equal 

 '3515 grm. ash free, gave with chromate of lead -5415 grm. car- 

 bonic acid and -2335 grm. water. 



V. -4575 grm. substance containing 2195 pr. ct. ash, equal to 

 '357 grm. ash free, gave with chromate of lead '5735 grm. car- 

 bonic acid and -2235 grm. water. 



VI. -6455 grm. substance containing 3483 pr. ct. of ash and 

 equal to -4206 grm. ash free, gave -6655 grm. carbonic acid and 

 •280 grm. water. 



VII. -356 grm. substance containing 23-78 pr. ct. ash, equal to 

 '269 grm. organic matter, gave with soda lime *492 grm. chlorid 

 °f platinum and ammonium. 



VIII. *5203 grm. containing 21-95 pr.ct.ash, equal to -406 grm., 

 gave with soda lime and subsequent ignition of the precipitate of 

 chlorid of platinum and ammonium -3265 metallic platinum. 



IX. 1-2197 grm. containing 25 pr. ct. ash, equal to -9147 grm. 

 after mixture with nitrate of baryta and subsequent oxydation 

 by fuming nitric acid, according to Weidenbusch's method of es- 

 timating sulphur * gave a precipitate of 0935 grm., which after 

 Hputioo, treatment with dilute hydrochloric acid, and a second 

 weighing, amounted to -080 grm. sulphate baryta, corresponding 

 t0 '0118 grm. sulphur. 



Fharmacie, vol. lxi, page 311. 



