1885.] NATURAL SCIENCES OF PHILADELPHIA. 421 



March 24. — Nine specimens of small diamonds. 



March 25. — One specimen of lepodolite, hornblende, staurobte. 



May 27. — Two specimens of descloisite, one vanadanite, diamond 

 on matrix, quartz (mod. crystal), calamine, smithsonite, sraith- 

 sonite (geode). 



September 10. — One specimen of quartz on hematite, azurite, 

 colemanite, leidyite. 



September 27. — Two specimens of obsidian or pearl spar, one 

 fluorite (polished), opal. 



October 13. — One specimen of apophyllite, polydelphite, dys- 

 luite. 



October 13. — Two specimens of calamine, one franklinite, zin- 

 cite, willemite, zincite, two rhodenites. 



November 9. — Two specimens of topaz, one beryl (green cut), 

 beryl (yellow cut), essonite. 



Brush's Blowpipe A nalysis and Dana's Text-book of Mineralogy 

 were purchased for the use of the Curator. 



Respectfully submitted, 



Jacob Binder, 



Curator. 



REPORT OF THE BIOLOGICAL AND MICROSCOPICAL 



SECTION. 



The number of meetings held during the year ending Decem- 

 ber 1, 1885, was sixteen. 



The average attendance was ten. 



The following members were elected : Dr. Horace F. Jayne, 

 Dr. J. Bernard Brinton. 



The following members resigned : Dr. Persifor Frazer, W. T. 

 Seal, Dr. J. D. Thomas, Dr. J. G. Richardson. 



The following were some of the more important communica- 

 tions brought before the Section : — 



December 15, 1884. By Dr. Benjamin Sharp, upon " Homolo- 

 gies of the Vertebrate Lens.'" 



January 5, 1885. Dr. Benjamin Sharp, upon " The Formation 

 of Teeth in Ancyllus." 



January 5. By Miss Fielde, upon '* The Process of Regenera- 

 tion of Parts of the Earth Worm ; " by Dr. Horace F. Jayne, upon 

 "A Process of Staining." 



