THE AMERICAN 



MONTHLY 



MICROSCOPICAL JOURNAL 



Vol. XIII. 



FEBRUARY, 1892. 



No. 2. 



CONTENTS. 



Taylors Freezing Microtome. — (Il- 

 lustrated). — Taylor ----- 25 



Introduction to ElementaryBiology. 

 OSBORN --------26 



A Proposed New Desmid. — (Illus- 

 trated).— Hastings 29 



Notice of Walter H. Bulloch.- Tol- 



MAN ----------29 



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-photographj — (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 may 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 

 Bread. 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 pi'ojecting tubes, one to admit 

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

 the reservoir and carried off 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 



