1S87.] NEW-YORK MICROSCOPICAL SOCIETY. 41 



off from one form, about 20 by 30 inches in area, from which 

 these are part, were sufficient to give a decided ferruginous 

 shade to 350 square feet of flooring. 



7. Cuticle of Cyperus umbellatus : exhibited by M. M. 

 Le Brun. 



8. Ovipositor of a Saw-fly : exhibited by F, W. Leggett. 



9. Section of Limestone ; polarized : exhibited by T. B. 

 Briggs. 



exhibits from the society's cabinet. 



10. Section of Petiole and Leaf of the White Water Lily. 



11. Section of Leopard Skin. 



12. Scales of Telea Polyphemus. 



13. Zea Mays : Portion of Leaf. 



14. Deutzia gracilis : Portion of Leaf. 



SAN FRANCISCO MICROSCOPICAL SOCIETY. 



MEETING OF JUNE 22D, 1887, 



The regular semi-monthly meeting of the San Francisco 

 Microscopical Society was held last evening at its rooms, Presi- 

 dent Wickson occupying the chair. 



Series 2 and 3 of Walker & Chase's " New and Rare Diatoms," 

 consisting of photo-engravings of interesting forms, with de- 

 scriptive text, were donated by Dr. H. H. Chase. 



A communication was received from A. J. Doherty, of Man- 

 chester, England, the well-known preparer of microscopic ob- 

 jects, announcing his intention of visiting this city in a few 

 months. Arrangements have been made with him for a series of 

 demonstrations of the most approved methods used in the pre- 

 paring and mounting of objects for the microscope, and from 

 the admitted ability of the gentleman in this line his discourses 

 cannot fail to be interesting and instructive. A series of slides 

 mounted by him and comprising a wide range of subjects, were 

 shown under a number of microscopes last evening by J. G. 

 Clark, and the excellence of workmanship shown by these 

 mounts, elicited the warmest commendation. 



J. A. Sladky, of Berkeley, was duly elected a resident member. 



The useful little device known as " Griffith's Focus Indicator," 

 was shown by Mr. Riedy. Its object is to enable an approxi- 



