THE MICROSCOPE. 195 



English cousins since Spencer and Tolles took hold of the improve- 

 ment in lenses. 



As discussion on these subjects would have taken the full even- 

 ing, Dr. Howe moved that the rest of the evening be given to the 

 exhibition of objects, which was carried. 



Many interesting things were shown. Mr. Ward exhibited the 

 sweat tubes in the human epidermis, epithelia in the tongue of a 

 cat, papillae in a human finger, head of a tapeworm, several interest- 

 ing insects, the ovipositor of the saw fly, etc. 



Dr. H. D. Walker, of Franklinville, N. Y., drew attention to 

 a peculiar pulsating organ in the leg of an aphis or plant-louse. 



Henry Mills showed how valuable even the dust from the Phil- 

 adelphia mint was, as under the microscope it was found to consist 

 of very small particles of fine globules of gold. He also exhibited 

 the statoblasts of fresh-water sponge. 



Prof. Kellicott showed statoblasts of a new form oi plumatella, 

 which he had first found in Michigan. 



Dr. W. C. Barrett showed sections of human dentine, the tubuli 

 of which were penetrated, distended, and in many places broken 

 down by bacteria. Also slides in which round dentine had been 

 bored through in various directions by fungi. 



Dr. Geo. R. Stearnes had under his stand diseased hair bulbs, 

 surrounded with the trycophiton parasite of ring-worm. 



Miss Mary F. Hall exhibited specimens of her own prepara- 

 tions, viz.: Sea weeds with diatoms growing on them, fresh-water 

 sponge, butterfly scales, etc. 



Dr. Geo. E. Fell exhibited the wonderful sucker of the Dytiscus 

 or large water-beetle which is attached to the fore legs and enables 

 the beetle to attach himself to smooth surfaces; also sectional views 

 of the stomach of a frog and a human kidney. Many other inter- 

 esting objects were shown by the members before adjournment. 



Meeting of December, 1882. 

 At the regular monthly meeting of the Buffalo Microscopical 

 Club for the month of December, the paper of the evening was read 

 by Mrs. Mary B. Moody, M. D., upon the Bacillus of Tuberculosis. 

 The experiments and observations of Koch were detailed, his 

 methods given and his results summarized. Later discoveries were 



