1892.] NEW-YORK MICROSCOPICAL SOCIETY. 39 



9. Poison from stems of grapes: by L. Riederer. 



10. Transverse section of leaf of Oleander with stomata: by 

 E. G. Love. 



11. Section of agate: by J. D. Hyatt. 



Mr. E. A. Schultze read a translation from Zeitschrift fur 

 wissenschaftliche Mikroskopie, entitled " On the Effects of Hy- 

 droxylamine as a Paralyzing Agent for Contractile Elements." 

 This translation is published in full in this number of the 

 Journal, p. 28. 



Rev. Dr. Bolles explained at length the advantages of the 

 minute square paper boxes containing the mineralogical speci- 

 mens exhibited by him. A short section of a small cylinder of 

 wood is glued in the bottom of each box; a disc of black card- 

 board is glued on top of the wood, and the specimen is attached 

 to the black disc. 



This was followed by a discussion on the sweating of cells 

 containing dry mounts, and especially on the disadvantages of 

 wax cells, which discussion was participated in by Messrs. Cox, 

 Bolles, Hyatt, Leggett, and Zabriskie. 



Dr. E. G. Love stated concerning his exhibit that the pe- 

 culiar appearance of the stomata of the Oleander was due to 

 the fact that the stomata are each seated at the bottom of a 

 little depression in the surface of the leaf, the depressions being 

 lined with minute hairs. Dr. Carpenter mentions this in his 

 work on the microscope, and it probably occurs in only a few 

 genera of plants. 



Mr. Hyatt said of his beautiful section of agate that it was 

 composed of aggregated clusters of minute crystals of quartz, 

 showing hexagonal structure of the crystals. 



