﻿Proceedings of the Club 401 



for the formation of cellulose. It was found that when the cell 

 contents were plasmolysed, the protoplasmic masses usually re- 

 mained connected by protoplasmic threads. When these threads 

 were broken so that there was no possible connection with a mass 

 of protoplasm containing a nucleus, no new cell walls were formed, 

 if a protoplasmic mass was completely separated from the nucleus 

 • m its own cell, it was found that the influence necessary for the 

 rmation of cell walls could travel from the adjacent cells by 

 means of the protoplasmic connections. Simple contact without 

 living protoplasmic connections was not sufficient to induce the 

 formation of cell walls. If, however, the protoplasmic connec- 

 tions were not broken the influence of the nucleus was capable of 

 traveling over a distance of several millimeters/ ' 



fo 





Tuesday Evening, April 12, 1898. 



Mrs. Britton called attention to the efforts in progress to raise 

 a fund in aid of botanical work at Barnard College in memory of 

 the late professor there, Dr. Emily L. Gregory. 



The scientific program followed. 



1. Dr. Underwood presented a paper by Rev. E. 



J 



Mich 



Chicago on " Vitis 



scribing its 



snowing among its specific characters, a tough skin and pulp, large 

 seeds, blue to vinous-purple color, and globose or depressed fruit 

 even larger than in cultivated varieties such as the Concord. 



Discussion followed, Dr. Britton speaking of the high value to 

 *> e attached to the character founded on intermittent tendrils. 



he Secretary and Dr. Rusby spoke of pink, purple, and other 



C ° Iors ar nong its variants in nature. Dr. Rydberg mentioned a 



s 'milar wide range of color-variants in Prunus in Nebraska, where 



caf and other characters may be indistinguishable, but the fruit 



*fll vary i n color, and also in flesh, taste, and flavor. 



2 - A communication on "South American Piperaceae " was 



Presented by Dr. Rusby, on behalf of Prof. Casimir De Candolle. 



c Candolle, in studying the last of the collections in this family 



JJ*fe by Mr. Bang, had aJs 



determ 



>r, 'ivian specimens pertaining to the early collections of Weddell, 

 ' [ andon. and others. Among the results were the eleven new 



