56 JOURNAL OF THE [January, 



times attain under favorable circumstances. Prof. E. Ray 

 Lankester, Encyc. Brit. 9th ed. xix. 437, says, " Alcyonella forms 

 massive coenoecia of many hundred polypides, as large as a man's 

 fist." And again, " All the genera known are British." 



Mr. Walter H. Meade announced the death, on June 2Sth last, 

 of Mr. William R. Mitchell, a member of the Society. The fol- 

 lowing committee was appointed by the chair to formulate suit- 

 able action in tliis matter : Walter H. Meade, J. L. Zabriskie 

 and A. Woodward. 



The Recording Secretary, Dr. Dean, gave notice of his in- 

 tended absence for three months, and Mr. George E. Ashby 

 was elected Recording Secretary/;-^ teni. 



Meeting of November 7Th, 1890. 



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



Sixteen persons present. 



A communication from the New York Camera Club was read 

 by the Secretary, inviting the Society to an exhibit of reproduc- 

 tions by various photographic processes. 



On motion the invitation was accepted, and the Secretary 

 was instructed to transmit the thanks of the Society for the 

 same to the Camera Club. 



objects exhibited. 



1. A Pycnogonum : by Ludwig Riederer. 



2. Obelia commissuralis McCready : by Ludwig Riederer. 



3. Pollen of Cotton Plant : by P. H. Dudley. 



5. Pseudo-scorpion : by J. L. Zabriskie. 



6. Nest of Pseudo-scorpion : by J. L. Zabriskie. 



7. Section of Cinnabar in chalcedonic quartz : by J. D. 

 Hyatt. 



8. Foraminifera, with dark field illumination : by J. D. 

 Hyatt. 



from the cabinet of the society. 



9. Section of Chlorite Schist from France. 



10. Section of Argillyte from Wales. 



11. Section of Sherzolyte from France. 



Mr. Riederer described his exhibits as follows : " Pycnogo- 

 nida or Fygtwgonidce were placed formerly by Milne-Edwards 



