112 JOURNAL OF THE [October, 



remains to be mentioned that the extremity of the seed leaf, re- 

 maining in the germinating date-stone, enlarges, dissolves the hard 

 cellulose, and conveys it as nourishment to the growing plantlet, 

 until the entire stone is emptied of its contents. This action, 

 however, although strikingly displayed in this case, is not peculiar 

 to the date-stone alone. It is common in some form to seeds pro- 

 vided with an endosperm, which take up their nourishment in 

 germination from the endosperm by special organs, which are 

 always parts of leaves. 



PROCEEDINGS. 

 Meeting of May 6th, 1892. 



The President, Mr. J. D. Hyatt, in the chair. 



Twenty-six persons present. 



Dr. Carl Heitzmann was elected a Resident Member of the 

 Society. 



On motion the thanks of the Society were tendered Mr. Mor- 

 ris K. Jesup, President of the Board of Trustees of the Ameri- 

 can Museum of Natural History, for his kindness in granting 

 the use of the Halls of the Museum Building on the occasion of 

 the late Annual Exhibition of the Society; and also to Messrs. 

 Louis P. Gratacap and William Wallace for their invaluable as- 

 sistance on the same occasion. 



Mr. Carlton C. Curtiss read a paper entitled "The Anatomy 

 of the Stem of Wistaria Sinensis." This paper is published in 

 full in this volume of the Journal, p, 79, and was illustrated by 

 microscopical sections of the wood of the stem, as indicated 

 below. 



OBJECTS EXHIBITED. 



1. Transverse section of one-year-old stem of Wistaria Sinen- 

 sis, showing pith, medullary sheath, xylem, phloem, periblem, 

 and dermatogen. 



2. Transverse section of the wood, showing transition from 

 duramen to alburnum. 



3. Radial section, showing spiral tracheids of medullary 

 sheath. 



