234 THE AMERICAN MONTHLY [October, 



many others were unaffected by the low temperature. As in other 

 spheres of animal life, the struggle for existence went on, with the sur- 

 vival of the fittest. Ice sometimes contained the bacilli of typhoid 

 fever. It might be nothing short of a congealed emulsion of bacteria 

 with which we could inoculate ourselves. He urged the necessity of 

 safeguards against the pollution of the water by sewage, etc. This 

 was a duty in which everybody was interested. Snow ice generally 

 contained a great deal of bacteria. Any ice not entirely clear should 

 not be allowed to come into contact with food. Absolute safety could 

 only be obtained by making ice by the artificial freezing process. Dr. 

 Jackson said he did not wish to be understood as wishing to introduce 

 anything sensational, or to make a crusade against the ice companies. 



A paper by Dr. Fell on " The Value of the Microscope in the Diag- 

 nosis of Tuberculosis " was read by title, after which the Society ad- 

 journed for dinner and an excursion down the river. 



manufacturers' exhibition. 



Fine exhibits of microscopes, objectives, accessories, microtomes, 

 mounting instruments and materials, lenses of all descriptions, cabinets 

 for slides, microscopical literature, and mounted objects were made by 

 the following well-known dealers in microscopic supplies : 



By Mr. G. S. Woohnan, of New York : 7 microscopes, object boxes, 

 and many slides illustrating nearly all branches of microscopical mount- 

 ing, many of which were of a rare character. Noteworthy among them 

 were the histological and dental, many of which were beautifully stained ; 

 others that required polarized light. The sections of rocks attracted 

 attention, particularly the slides of chai-acteristic eruptive rocks. In 

 speaking of Mr. Woolman's collection of slides a prominent member 

 of the Society said that some of them were the finest he had ever seen. 



By Messrs. Bausch & Lomb, of Rochester : Microscopes of their own 

 make, together with all microscopical supplies, objectives, microtomes, 

 books, &c. 



By Miss M. A. Booth, of Longmeadow, Mass., with Griffith stand : 

 250 slides of recent and fossil diatoms, foraminifei'a, seeds, opaque ob- 

 jects, etc. 



By Messrs. y. W. £hieen & Co., of Philadelphia: Microscopes 

 (Acme) — calling especial attention to the easy movement of the coarse 

 adjustment. Slides of anatomical sections and of general interest, books 

 and accessories. One slide of Lepidocyrtus curvicollis, showing the 

 projections on the surface, was exhibited. 



By Dr. L. D. Mcintosh, of Chicago : 5 microscopes, microscopic at- 

 tachment for use with solar or artificial light for projecting or photo- 

 graphing objects, solar stereopticons, slides, etc. 



By The Educational Supply Co., of Boston: Zeiss' microscopes, 

 accessories, Thomas' and Minot's microtomes, mounting instruments 

 and materials. 



FRIDAY AFTERNOON. THE EXCURSION. 



At 2.30 o'clock the " Huntress" steamed out of Buffalo river with 

 the microscopic party, including many ladies. 



First the boat made a circuit of the new Government breakwater, that 

 the visitors might see Buffalo's big outer harbor. Then heading down 

 the river a call was made at Ferry street, where many of the scientists 



