37 



The minutes of November 12 were read and approved. As 

 there was no business to be transacted the scientific program 

 was taken up. The first number consisted of a paper by Dr. 

 W. A. Murrill on "The Polypores of the Adirondacks." This 

 paper has been published in full in the Journal of the New York 

 Botanical Garden, 13: 174-178. N 191 2. 



The second number was given by Dr. A. B. Stout. The 



subject of his discussion was "The Distribution of Tissues in 



the Root Tip of Car ex aquatilis." Several photomicrographs 



of sections of root tips were exhibited, and drawings were made 



to illustrate particular features in the arrangement of the tissues. 



Meeting adjourned. 



B. O. Dodge, 



Secretary 

 December 10, 191 2 



The meeting of December 10, 1912, was held at the American 

 Museum of Natural History at 8:15 P.M. President Burgess 

 presided. Twenty-two persons were present. 



The minutes of November 27 were read and approved. 



On the motion of Dr. Southwick the treasurer was authorized 

 to draw an order for the sum of twenty dollars in favor of Dr. 

 William Mansfield to cover the dues as the representative of 

 the club to the council of the New York Academy of Sciences. 



The paper of the evening was on "Diatoms," by Dr. Marshall 

 A. Howe. It was a semi-popular account of the principal 

 structural and morphological features of diatoms, their distri- 

 bution and habitat, their geological interest and importance, the 

 various economic uses of diatomaceous earths, etc. The talk 

 was illustrated by about seventy-five lantern slides from the 

 collection of the late Charles F. Cox. Many of the photographs 

 shown were made under high powers of magnification and they 

 brought out with much distinctness the secondary markings 

 and other minute structural details of the walls of various types 

 of diatoms. 



Meeting adjourned. 



B. O. Dodge, 



Secretary 



