286 BOTANICAL GAZETTE [OCTOBER 
Dr. TH. Bokorny discusses ® the various modes of storage of proteids 
and their microchemical relations. Proteids soluble in 5~10 per cent. salt 
solution (globulin) are stored in the proteid grains and crystals (“aleurone” 
and “‘crystalloids’’) of seeds. Proteids insoluble in NaCl solution have not 
been observed in proteid grains. Neither “active proteid”’ nor fat could be 
detected in the proteid grain itself; the fat is associated with the general 
proteids of the seed, probably with the plasmatic proteids. The plant caseins 
seem not to occur in the proteid grains, for these dissolve completely in NaCl 
solution, whereas the caseins are not soluble therein. The glutens of the 
cereals constitute a special case; they dissolve in 70-80 per cent. alcohol, @ 
fluid which usually serves to precipitate proteids. Peptone was not recog: 
nizable in resting seeds. It and peptonizing enzymes occur in plants only 
exceptionally, as in fungi and carnivorous plants. Simple amides (aspara- 
gin, tyrosin, leucin, etc.) are well known in seeds and are widely distributed 
in vegetative parts. They appear to be the first decomposition product as 
well as the first formative stage of the proteids.— C. R. B 
L. Kny has been unable to find any traces of the intercellular living pro 
toplasm said by Baranetzki to be observable in the intercellular spaces of 
young stems of Myriophyllum spicatum and Ceratophyllum demersum, an 
intercellular protoplasm in roots of Matas major. Kny examined a number 
of water plants and says: ‘In no case was I successful in obse 
protoplasm (whether with or without nuclei or chromatophores) as 
the young or full grown air spaces except when its origin from the 
ing cells was in the highest degree probable. Even in the most advan 
geous covered preparations, in which the protoplasm within the cells adjoining 
the air spaces proved motile for several (in extreme cases fo 
sign of self-movement in the periphery of the air spaces was to ae 
existence of a living extracellular plasma in the large air spaces of sal 
plants must remain improbable until proof more convincing than at Pt 
is forthcoming.” —C, R. B 
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HERMANN FIscuEr concludes his paper on “ Der Pericykel in den 
Stengelorganen” ® as follows : res 
1. In about 32 per cent. of the dicotyledons investigated a more °°” 
perfect endodermis may be recognized marking the distinctio 
tex and central cylinder. The so-called pericycle, dy tts fos’ 
limit of the cortex and the ring of vascular bundles is allied witht pine 
bium of the root. Considered histologically, genetically, and 3 ee 
: ’ ‘ an be 
region, no characters common to pericycle and pericambium can be P 
cated. 
<fo27. * 
8 Bot. Cent. 82 : 289-306. 1900. 19 Jahrb, f. wiss. Bot. 35‘! oh ie 
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