- 1] i Proceedings of Section G, A. A. A. S. 335 
conclusion was reached that while the lengths of prophylla 
told some relation to the lengths of sheaths, the character of 
- the apex is of chief service in classification, varying as it does 
‘ fom acuminate to bilobate. Such distinctions are sometimes 
specific, sometimes generic. 
Discussed by Mr. Swingle, who suggested that prophylla 
| a. adaptive character in the protection of young branch 
j. CHARLES R. BARNES: Ox the food of green plants.— 
“Afiscussion of various nutritive processes, suggesting the 
3 pat application and restriction of the terms ‘‘digestion” and 
_ SSimilation,” claiming that the true food of plants was not 
te “food” of ordinary reference, and proposing the applica-- 
- fompounds under the influence of sunlight. [The paper will 
‘pear in full in the BOTANICAL GAZETTE. 
: , by Messrs. Britton, Smith (E. F.), Swingle and 
—SAMIan, 
ve FRIDAY AFTERNOON, AUGUST 18. _ 
©. J. Cristian BAY:. A new infection needle for the study 
flower play . - . . 
The rust through a metal disc, an inch in diameter. 
~My dust oe aS a screen to prevent contamination from fall- 
uid cy] serms when transferring infection to or from 
ae es.of micro-organisms. 
OL GE. Any 
§ win of the 
EeON: Comparative study of the structure and 
‘porangia of ferns in the dis perston of spores.— 
€ annulus in various ferns was described, the 
‘lip cells, and connective cells in each case being 
Ons j ntion called to the function of each one of 
0 cg reference to scattering spores. The question 
. as to the proper application of the terms 
incomplete” in reference to the annulus. 
HALSTED: The Solandi printing applied to 
Pat fixed ae 2 photographic print. enetos 
and th ypo, it is made transparent wit 
mes a negative from which any number 
Printed. The process is suitable to fresh 
