338 "The Botanical Gazette. — [September, 
15. B. T. GALLOway: Results of some recent work on rust 
of wheat.—In the absence of the author the paper was read 
by title. 
MONDAY MORNING, AUGUST 21. 
16. THEOBALD SmitH: Further observations on the fer- 
mentation tube with special reference to anaerobiosis, reduction 
and gas production.—The different forms of the group of 
Bacillus coli produce gas when glucose is present in the cul- 
ture medium, and in about equal amounts and equal rapidity. 
They have a varying behavior toward other sugars, however. 
The introduction of potash shows that about one-third of 
the gas produced is carbon dioxide, and the remainder of the 
gas is explosive, being probably hydrogen. Methylene blue 
put into the fermentation tube will be decolorized by the 
growth of the germs, but when mixed with air the fluid 
becomes colored again. The classification of bacteria into 
those causing alkaline and those causing acid reaction of the 
medium is not tenable, as these changes depend upon the 
nutritive constituents of the medium. 
Mr. Lasché stated that he had found wnat he took to be @ 
loss of albuminoids during such fermentation, and that ne 
sugar was withdrawn; but that he was not yet prepared to 
defend this view. : oo 
17. JOHN G. Jack: The fructification of Resto ss h 
Much uncertainty of statement existing concerning the sit 
of time involved in fructification, the author studied J. Virg! , 
iana, J. Sabina, var. procumbens, and J. communis. be 
found that the fruit matured in one, two, and three par ” 
the order given. The morphology of the so-called over 
; wr ished in full in 
was also discussed. [The paper will be publishe 
the GAZETTE. 
18. S.G. WricHt: Zhe minute structure and pee 
d the anatomical 4 
second maxium at two P. M., and then falls until 
M. it reaches its full ‘‘sleeping” position. ccd the pulvi- 
to the mesophyll cells. All the tissues of th 
arranged as to secure movement with the le 
penditure of energy. 
