82 



duce hairs in chambers of calcium-free glass upon Ca-free 

 cloth, he was able to obtain them abundantly by the addition 

 of very slight traces of Ca. This has been confirmed again and 

 again by both Mr. Farr and myself in repeated failures to pro- 

 duce aquatic root hair growth upon the roots of Georgia Col- 

 lards in pure distilled water, and their profuse production in 

 very dilute solutions of Ca(0H)2,— as low as 0.000010 M. 



FoRMAN T. McLean 

 Secretary 



Meeting of March 5 



This meeting was held at the American Museum of Natural 

 History with twenty-six members present. President Denslow 

 called the meeting to order at 8:30 P. M. 



The following new members were elected: 



Mr. A. H. Cockayne, Director, Plant Research Station, 

 Palmerston, North, New Zealand; Mr. John Adam Moore, 

 Department of Botany, Washington State College, Pullman, 

 Washington; Mr. Leon W. Bowen, 77 Evergreen Avenue, 

 Bloomfield, New Jersey; and Mr. C. L. Lundell, Columbia 

 University, New York City. 



Dr. J. S. Carling of Columbia University gave a lecture 

 on "Diseases of Characeae." He told some of the puzzling 

 relationships of these organisms and their curious life his- 

 tories. The lecture was illustrated by lantern slides. 



After the lecture, the meeting adjourned to refreshments 

 of cofifee and cake, provided by the entertainment committee, 

 served in the bird hall. 



Forman T. McLean 

 Secretary 



NEWS NOTES 



In this issue we have a short article by Dr. Harshberger on 

 the bracts of Mendoncia. Dr. Harshberger had written us of 

 his intended trip to New Zealand and Australia which was to 

 have been started the end of May. In the midst of his plans 

 he was suddenly taken ill and died on April 27th. Since 1892 

 Dr. Harshberger had been connected with the botanical de- 

 partment of the University of Pennsylvania. He was in his 

 sixtieth year. 



