408 
FripAy AFTERNOON, AUGUST I7TH. 
Dr. E. F. Smith in the Chair. 
Dr. Smith then presented « Additional Notes on the bacterial 
Disease of Cucumbers, with an Exhibit of Photomicrographs.” 
The cause of the disease lies in the filling of the vessels by the 
growth in them of bacteria, thus stopping the flow of water. 
Prof. C. E. Bessey spoke on “Extreme Decapitalization,” in no- 
menclature, suggesting that the Club might do good by sending 
to publishers who violate usage a statement of accepted practice. 
Prof. B. T. Galloway moved’ that a committee of'three be ap- 
pointed to take the matter under consideration. The motion was 
carried, and the Chair announced that he would name the com- 
mittee later. 
. Prof. L. R. Jones recommended a form of Hlematococcus for 
’ class demonstration of motile gametes. 
The same speaker exhibited a method of showing’ leaves be- 
tween glass plates to classes of students. 
Monpay Morninc, AUGUST 20TH. 
The meeting was called to order by the President, who an- 
nounced Mr. Elias J. Durand to speak on “ Sporangial Trichomes: 
in certain Ferns.” 
Trichomes occur more or less abundantly on the sporangia of 
certain ferns, especially those of the genera Phegopteris and Poly- 
podium. The occurrence is constant and not accidental.* In the 
instances already observed these hairs, which are either acute oF 
capitate, are always found on the lateral wall of the sporangium 
near the annulus. So far as noted trichomes occur on the ee 
angia of such ferns only as have similar ones on the surface © 
the frond. The occurrence of trichomes on sporangia: is suse 
sistent with the known epidermal nature of the latter. The pane’ 
tion of sporangial hairs may be protective, as sags! or — 
abundantly on non-indusiate ferns. 6 
Mr. Arthur Hollick spoke on “Stipules and ‘shetr ‘Signi : 
cance from the Standpoint of Palzobotany.” seed ‘ 
The material upon which these remarks is based was col 3 
_ from the Laramie horizon ear Walsenberg, Colo., for the late ye 
Prof. J. S. Newberry, but was not described by him. ‘The 
