160 JOURNAL OF THE [july, 



cover-glass, "in case of a glycerine mount, if there is excess of 

 glycerine around the cover, a small stream of cold water, used 

 to wash away the excess of glycerine, also instantly carries away 

 the ring of ink. If there is no excess of glycerine the ring of 

 ink may be left, and it will be entirely hidden by the sealing of 

 the mount, if any dark colored cement is used. In case of a 

 balsam mount the ring of ink will be scraped away when clean- 

 ing the slide, or if there is no excess of balsam, it may be 

 quickly removed, when the mount has hardened, by the moisture 

 of the breath and gentle rubbing with a handkerchief." 



Meeting of March i6th, 1888. 



The President, Mr. Charles F. Cox, in the chair. 



Twenty-five persons present. * 



Dr. William S. Gottheil, Dr. Paul Hoffman and Mr. William 



E. Simpson were elected Resident Members; and Dr. R. H. Ward 

 was elected a Corresponding Member of the Society. 



OBJECTS EXHIBITED. 



1. Section of palpus of Pieris oleracea, Harris, showing organ 

 of smell : by L. Riederer. 



2. Section of palpus of Pieris rupee, Schrank, showing organ 

 of smell : by L. Riederer. 



3. Transverse section of Hair of Horse, rBTro of an inch thick : 

 by J. L. Zabriskie. 



4. Longitudinal section of Hair of Horse, Tsirxy of an inch 

 thick, showing medulla, cortex and external scales : by J. L. 

 Zabriskie. 



5. Leaf of Croton tiglium, showing hairs in siiu : by Kenneth 



F. JUNOR. 



6. Transverse section of spine of Echinus cidaris: by Kenneth 

 F. JUNOR. 



7. Section of Monazite : by T. B. Briggs. 



8. Section of pebble from Chagres River, the quartz contain- 

 ing fluid inclusions, each having a moving vacuole : by P. H. 

 Dudley. 



9. Musical organs of the Seventeen-year Harvest-fly, Cicada 

 septendecim, L. : by F. W, Leggett, 



