1892.] NEW-YORK MICROSCOPICAL SOCIETY. 113 



4. Tangential section, showing wood-elements, tyloses, me- 

 dullary ray, etc. 



5. Tracheids, isolated by Schultze's fluid. 



6. Tracheae, showing halo, canal, and thickening membrane. 



7. Transverse section, showing cork, bast, etc. 



8. Radial section, showing crystal and resin sacs of bast'. 



9. Tangential section, showing origin of cambium. 



TO. Transverse section, showing beginning of anomalous 

 growth. 



11. Transverse section, showing growth from cork to bast to 

 wood to bast to wood, illustrating the theory of the paper. 



Exhibits i-ii by Carlton C. Curtiss. 



12. Transverse section of stem of A7nphilophiimi, and two 

 photomicrographs of the same : by E. G. Love. 



Meeting of May 2oth, 1892. 



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



Twenty-six persons present. 



Mr. George W. Kosmak was elected a Resident Member of 

 the Society. 



Mr. William Wales, referring to the letter of Mr. H. R. Spen- 

 cer, dated Buffalo, N. Y., January 27th, 1891, and published in 

 the Proceedings of the American Society of Microscopists, said 

 that he desired to verify the statement of that letter that Mr. 

 Spencer, Senior, who was the father of the manufacture of mi- 

 croscope objectives in this country, constructed lenses of fluor- 

 spar at that time — the summer of i860. From his personal 

 knowledge he could verify the fact that Mr. Spencer made the 

 said one-eighth objective for Dr. Rufus King Brown, and also a 

 one-quarter objective, of 175" air angle, with perfect color cor- 

 rection, containing a fluor?par lens, for Dr. Louis Tice, which 

 objective is now in the possession of Dr. Charles E. West, of 

 Brooklyn. 



The Corresponding Secretary presented a communication, 

 dated May 5th, 1892, from Mr. K. M. Cunningham, of Mobile, 

 Ala., describing seven slides prepared by Mr. Cunningham, and 

 donated by him to the Cabinet of the Society, as follows: 



" I. A slide of diatoms from Selma, Ala. The city overlooks 



