The Mickoscope. 95 



in a maDner to insure great accuracy. In order to preserve the 

 beauty of the plates, a " working diagram " is introduced, through 

 which special parts of any plate can be found at a glance. In this 

 way the disfigurement caused by numerous indices is avoided. The 

 full page plates are: a molar; a longitudinal section of an incisor,, 

 and another of an inferior molar: a transverse section of a bicuspid 

 root; blood vessels of pulp: section of root parallel to dentinal 

 canals; two dentinal canals; odontoblasts, enamel, etc. Each plate 

 is accompanied by an explanatoiy text. Veiy interesting are the en- 

 graved examples from the valuable collections of Professors Ford 

 and Taft. One seems to find here all possible anomalies and freaks 

 of growth. Appended is found a full description of the teeth as 

 imderstood to-day, together with directions for preparing sections. 

 The work is encased in a leatherette portfolio, and makes a hand- 

 some appearance. It is a credit not only to the author, who has 

 used his opportunities to the best advantage, but to the engraver and 

 printer as well. 

 Vick's Monthly Magazine and Floral Guide, Rochester, N. Y. 



Novel Methods op Treating Diseases of the Middle Ear, by Seth S. 

 Bishop, M. D. Reprint. 



A. B. C, AN Alphabetical Reprint. By J. Eyra, A. A. Garner Reprint, 

 pp. 4. 



Rhinology in the Past and Future. By Carl H. Von Klein. A. M., M. D. 

 Reprint, Journal American Medical Association, Dec. 18, 1886. 



Michigan State Board op Health Documents. 



Management op the Secundines: Sterility. By W. H. Mathews, M. D. 

 Reprint. 



Report on Diseases of Rectum. By Joseph H. Mathews, M.D. Reprint. 



Trichina Spiralis and Trichinosis, including an Examination of Indiana 

 Hogs. By Thomas B. Redding, A. M., Ph. D. 



CORRESPONDENCE AND QUERIES. 



H. S.. Mount Carroll. — Vegetable sections, which are not 

 injured by the shrinkage, may be mounted in balsam. There are, 

 however, few that will bear this treatment. Farrant's medium, com- 

 posed of gum acacia, water and glycerine, similar to the medium 

 you suggest, answers very well. The most satisfactory medium for 

 general work that we have used is glycerine jelly. This sets quickly 

 and preserves the specimen well. 



Dr. N., Parkeville, Mich. — A No. 5 objective or higher is 

 necessary in examining for B. tuberculosis. 



