t887.] new-york microscopical society. 85 



The Corresponding Secretary also acknowledged the receipt 

 of copies of Dr. Van Heurck's Communications to Scientific 

 Societies at Antwerp. 



The Librarian, Mr. A. Woodward, read a letter from Mr. G. 

 S. Woolman, who presented to the Society a copy of the new 

 work by Dr. Alfred C. Stokes, entitled, " Microscopy for 

 Beginners." 



Mr. A. Woodward also read a Paper, entitled, " The Forami- 

 niferal Fauna of the Miocene Bed at Petersburg, Va.," which 

 Paper is published in this volume of this Journal, at page i6. 



PROGRAMME OF OBJECTS ANNOUNCED FOR EXHIBITION. 



1. Meyeuia fluviatilis, var. asperruna, Dawson, from Calumet 

 River : exhibited and described by A. Woodward. 



Fresh-water sponge. Spicules birotulate, that is, consisting 

 of two wheels or disks, connected at their centres by a short 

 shaft, or they may be flat or umbonate disks. 



" The first sponge found in Niagara River by Prof. Kellicott, 

 belongs to this genus. Mr. G. M. Dawson had found the same 

 species in Canada, and named it SpoT^^illa asperrima, but ac- 

 cording to our present classification it must be Meyenia asper- 

 rima. It differs very slightly, if at all, from Meyenia fluviatilisy 



2. Spon^illa fragilis, Central Park, New York City. A dried 

 sjjecimen : exhibited and explained by A. Woodward. 



3. Specimens of Amphisiegina lessonii, d'Orb., from Petersburg, 

 Va. Also others from Nussdorf, near Vienna, Austria : ex- 

 hibited and explained by A. Woodward. 



4. Laminaria longicruris, Dela, Portland Harbor, Me. 

 Broken up and distributed to the members : exhibited and 

 explained by A. Woodward. 



5. Section of Concord Granite (under the Polariscope) : ex- 

 hibited by T. B. Briggs. 



6. Bryozoa : exhibited and described by W. E. Damon. 

 This specimen shows the delicate lace-like structure of the 



corallaceous deposit of this compound polyp animal ; formed 

 on the inside of the neck of a bottle — hence the honey-comb 

 like cells have been well protected, and are very perfect. 



7. Eggs of Bot-Fly {Gasterophilus equi) on horse hairs, with 

 the larvae emerging : exhibited by Chas. S. Shultz. 



