THE AMERICAN 



MONTHLY 



MICROSCOPICAL JOURNAL 



Vol. XIII. 



FEBRUARY, 1892. 



m-.. 2. 



CONTENTS. 



Taylors Freezing Microtome.— (II- | 



histrated). — Taylor ----- 25 



Introduction to ElementarjBiology- 

 — OSBORN - - - 26 



A Proposed New Desmid. — CIllus- 

 tra ted). — Hastings 29 



Notice of Walter H. Bulloch.- Tol- 



MAN --...-.-.- 2() 



Apparatus for Controlling Living 

 Organisms Under the Microscope. 

 — (Illustrated). — Schultze - - 30 



Interesting Items on Diatoms. --Cox 32 



Editorial. — Too Scientific. 

 Prompt Publication ----- 38 



Microscopical Apparatus.— Cam- 

 era for Micro-photography— (Il- 

 lustrated). A Nice Sterilizer - 39 



Microscopical Manipulation. — 

 Demonstrating the Influenza Ba- 

 cillus. Determining Magnifica- 

 tion. To Detect Air Bubbles. 

 To Clean Objectives. Mounting 

 Opaque Objects. To Mount Sand 

 Dry. Confining Living Forms. 

 Mounting Tubercle Bacilli. Ce- 

 ment ----------40 



Biological Notes. — Sweet Potato 

 Blossoms. Duration of Life. Bum- 

 ble-bee in New Zealand. Pre- 

 serving Botanical Specimens. 



Diatom Multiplication. Water- 

 melon Juice. Biological Speci- 

 mens. ' An Insectivorous Plant. 41 



Diatoms. — Diatoms from new Lo- 

 calities -42 



Bacteriology. — Discovery of the 

 Influenza Bacillus. Souring of 

 Milk. Chemically Pure Water. 

 Beer maj' contain Bacteria. Car- 

 bon Favorable to Growth of Micro- 

 organisms --------43 



Medical Microscopy. —Prevention 

 of Influenza. Actinomycosis again. 

 The Microscope in Diagnosis. 

 Dust Injurious to the Lungs. Tri- 

 china -----.----45 



Recreative Microscopy. — Brown- 

 ian Movement. Diatom Material. 

 The Sugar Insect ------ 46 



Microscopical News. -Adulterated 

 Biead. Milk. How Lenses are 

 Made -- 46 



Correspondence. — White's Ob- 

 jects -47 



New Publications. — Brockway. 

 Ward. Childs. Senn. Daw- 

 burn. Bremer. Wanamaker. 

 Kelsey -----47 



Want, Sale, and Exchange No- 

 tices - - COVER. 



Taylor's Freezing Microtome. 



By DR. THOMAS TAYLOR. 



WASHINGTON, D. C, 



[with frontispiece.] 



This combination microtome is adapted to three methods of section 

 cutting. 



The instrument is of metal screwed to a block of polished mahogany. 

 There is a revolving table with graduated margin, in the center ot 

 which is fitted a freezing-box having two projecting tubes, one to admit 

 freezing water, the other an outlet for it. The water is supplied from 

 the reservoir and carried oft' by means of rubber tubing which is at- 

 tached to the metal tubes, the terminal end of the outlet tube being fur- 

 nished with a small glass tube by means of which a too rapid outflow 



