98 JOURNAL OP THE [June, 



PROCEEDINGS. 



Meeting of May 7TH, 1886. 



The President, the Rev. J. L, Zabriskie, in the chair. 

 Twenty-five persons present. 



OBJECTS EXHIBITED. 



1. Pyrrholite, iridescent hexagonal crystals ; Elizabethtown, 

 Canada. 



2. Marcasite, with needles of white vitriol ; from Trenton 

 limestone, Jefferson County, New York. 



3. Marcasite, with iridescent tarnish; Galena, Illinois. 



4. Pyrite, with naturally polished faces ; lines of growth 

 parallel to cubical faces ; Chili. 



5. Pyrite (granular), minute cubes ; New Jersey. 



6. Pyrite, octahedra, iridescent with bands of color ; Wee- 

 hawken. New Jersey. 



7. Limonite (Bog-Iron Ore), in pseudomorphous octahedra, 

 after Pyrite; Weehawken, New Jersey. 



8. Pyrite decaying in marble; Lee, Massachusetts, 



9. Fibrous Pyrite, showing abundant fissures ; Marsden's 

 Diggings, Illinois. 



10. D'mtoms {Cosa'nodi'scus), altered into Tynte; London clay. 



11. Pyrite, octahedra, from altered fossil fruit ; London clay, 

 Island of Sheppey. 



The above objects were exhibited by Dr. A. A. Julien, in 

 illustration of his paper on " the Microscopic Structure of Iron 

 Pyrites." 



12. Crystals of Oxalate of Calcium on Mycelium of fungus in 

 decayed wood of Pinus Sirobus, L: by P. H. Dudley. 



13. The Carpet-Beetle {^Anthrefius scrophularice, L.), with some 

 related species: by Rev. J. L. Zabriskie. 



14. Scales — white, red, and black — oi Anthrenus scrophularuc, 

 L. : by Rev. J. L. Zabriskie. 



15. Spiracles of Platysavtia cecropia: by F. W. Leggett. 



iron pyrites. 

 Dr. A. A. Julien read a paper on "The Microscopic Structure 

 of Iron Pyrites." 



crystals of oxalate of calcium. 

 Mr. Dudley : " These crystals were obtained from a specimen 



