166 JOURNAL OF THE [julv, 



draft resolutions relating to the death of Mr. Zentmayer: William 

 Wales, N. L. Britton, J- L- Zabriskie. 



Meeting of April 2oth, 1888. 



The President, Mr. Charles F. Cox, in the chair. 

 Forty-nine persons present. 



Prof. E. G. Love, Ph.D., and Mr. J. T. C. Grow were elected 

 Resident Members of the Society. 



objects exhibited. 



1. Nephelinite, Odenwald, Germany. 



2. Luxulyanite, Cornwall, England. 



3. Tachylite, Giessen, Germany. 



4. Augite — lava, Nassau. 



5. Olivine— serpentine, Saxony. 



6. Foraminiferous Limestone, Kent, England. 



These six objects were prepared and exhibited by Dr. H. 

 Hensoldt in illustration of his address, delivered at this 

 meeting. 



7. Transverse and longitudinal sections of the Hair of the 

 Prong-horn Antelope, Antilocapra Americana, Ord: by J. L. 

 Zabriskie. 



8. Candeina nitida, d'Orbigny, found in the North Atlantic and 

 in Torres Straits : by A. Woodward. 



9. Crystals of Meconic Acid: by C. F. Cox. 



10. Films of Silicate of Soda: by C. F. Cox. 

 Ti. A Sertularian: by W. E. Damon. 



12. Human Blood in a Current-Slide: by Dr. D. S. Holman. 



Dr. H. Hensoldt, Lithologist, was introduced to the Society, 

 and delivered an Address entitled " The Microscopical Investi- 

 gation of Rocks." This Address is published in this number of 

 the Journal, p. 139. 



Dr. Hensoldt also, by means of specially devised apparatus, 

 exhibited before the Society the operations of slicing, grinding 

 and polishing minerals, and explained his methods of mounting 

 thin mineral sections. 



On motion, the thanks of the Society were tendered Dr. Hen- 

 soldt for this Address and demonstration. 



