BULLETIN OF THE BUSSEY INSTITUTION. 71 
Cabbage.— A head of cabbage, bought on March 11, 1904, was divided 
into the several leaves that composed it. These leaves were dried at 
a moderate heat, and afterwards ground to a fine meal and hydrolyzed 
with hydrochloric acid of 5 per cent. On adding the phenylhydrazin 
acetate reagent to 1 cc. of the unevaporated product of the hydrolysis 
excellent crystals of mannose-hydrazone were obtained, but none were 
got from 1 cc. that was diluted with 1 cc. of water. From 1 ce. of 
the solution obtained from the evaporated product of the hydrolysis 
excellent mannose-hydrazone crystals were obtained, and so they were 
also from 1 cc. of the solution after dilution with 1 cc. of water, but 
none were got on diluting with 2 and with 3 cc. of water. 
Beets. — Bought from a provision dealer on March 5, 1904. They were 
sliced, dried at a moderate heat, and ground to a fine meal before the 
hydrolysis. No mannose-hydrazone was detected in the unevaporated 
product of the hydrolysis. But good mannose-hydrazone crystals and 
plates were got from 1 cc. of the solution prepared after the evapora- 
tion of the product of the hydrolysis, and also from a 1 ce. portion 
that was diluted with 1 cc. of water, but none were found after diluting 
with 2 cc. of water. 
Parsnips. —Bought March 5, 1904. The sliced roots were dried at a 
moderate heat and ground toa fine meal. From the unevaporated pro- 
duct of the hydrolysis no reaction for mannose-hydrazone was obtained ; 
but after evaporation a not very abundant crop of mannose-hydrazone 
plates and prisms was observed on testing 1 cc. of the solution. None 
were found on diluting 1 cc. portions of the solution with 1 cc. and 
with 2 cc. of water. 
Celery Stalks.— Bought on November 21, 1908. The green, terminal 
leaves were removed, the stalks were cut to thin slices and ground to 
a fine meal after having been thoroughly dried at a moderate heat. 
No mannose-hydrazone was detected on testing the unevaporated 
product of the hydrolysis. But good reactions were obtained from the 
solution prepared from the evaporated product of the hydrolysis. 
Crystals and plates of mannose-hydrazone were obtained from 1 ce. of 
the solution, and also from 1 cc. portions that had been diluted respec- 
tively with 1 and 2 cc. of water, but not from those diluted with 
3 and 4 cc. 
Prunes. — Bought April 7, 1904. The flesh was cut away from the 
stones, chopped fine, and ground up in a mortar and hydrolyzed with 
hydrochloric acid of 5 per cent. Mannose-hydrazone balls and crystals 
were obtained on testing 1 cc. of the unevaporated product of the 
hydrolysis, but none were seen on diluting another 1 cc. portion with 
1 ce. of water. From 1 ce. of the solution, prepared after evaporating 
the product of the hydrolysis to dryness, mannose-hydrazone crystals 
and plates were obtained, and they were got also from 1 cc. portions 
that were diluted with 1 and with 2 cc. of water, but not from 1 cc. 
portions that were diluted with 3 and 4 cc. of water. 
