MICROSCOPICAL JOUR NT A'^^r^^> 



THE AMERICAN 



MONTHLY 



Vol. XIII. 



JANUARY, 1892. 



No. 1. 



Some New Apparatus — (Illustrated) 



Observations on Staining the Fla- 



gella on Motile Bacteria. -Moore. 



Introduction to Elementary Biology. 



— OSBORN - 



Rotifer Notes. — Kellicott - - - 



Defects in Certain European Grapho 

 Prisms. — Knott - - - ■ 



Recreative Microscopy. — Silver 

 Crystals --------- 



Editori.\l. — The Needs of Ameri- 

 can Microscopy ------- 



Microscopical Apparatus. -A New 

 Polarizer. Glass for Immersion 

 Oil. Making Lenses. Collect- 

 ing Sediment for Examination - 



Microscopical Manipulation. — A 

 New Mounting Fluid. Crusta- 

 cean Eyes. Dried Algje. Reso- 

 lution of Amphipleura Pellucida. 16 



Biological Notes. -SexDetermined 

 by Temperature. Life After Des- 

 iccation. Malaria parasites. The 

 Radish. Hepatica triloba. Jump- 



CONTENTS. 



ing Seeds. Strength of Vegetable 

 Growth. Fermentation of Bread. 

 Growth of Sea Weeds. Sugar- 

 Cane Diseases. An Elm Parasite. 

 Life in Great Salt Lake. A Pink 

 Micro-Organism 17 



Medical Microscopy. — A Trouble- 

 some Cotton Seed. Purulent 

 Arthritis without Micro-organ- 

 isms. The Bacillus of Typhoid. 

 Influenza. Germs of Diphtheria. 19 



Microscopical News. — The Micro- 

 scopical Exhibition at Antwerp. 

 Sharp Practice. Diatom Notes - 20 



Microscopical Societies. — San 

 Franisco, Cal. Washington, D. C. 

 Austin, Texas. Royal Microscop- 

 ical Society, London. Microscop- 

 ical Club, St. Louis, Mo. Mon- 

 treal Microscopical Society - - 21 



Notices OF Books. — Ball. Ruling. 

 Bell - - . - - 24 



Want, Sale, and Exchange No- 

 tices -------- cover. 



.3 



9 

 12 



- 12 



13 



H 



15 



Some New Apparatus. 



I. — Stratton's Illuminator. 



(See frontispiece, figure L) 



This lamp, supported by nickel-plated rods rising from a heavy base, 

 and liaving an oil tank of ornamental glass, presents a beautiful ap- 

 pearance ; and being packed in a nice box of the general shape of a 

 microscope box, constitutes an excellent addition to the paraphernalia 

 of a microscopist. , The supporting rods are connected by stiff' joints, 

 which cause the lamp to remain in any position in which it has been 

 placed, and the possible positions of elevation or of obliciuity are such 

 as to give light in any manner desired. 



The oil tank can be rotated in the holder, thus turning the edge or 

 the broadside of the flame towards the microscope as necessity may 

 require. The thick glass chimney as well as the flame is concealed by 

 the metallic hood, well blackened, while a projection on the side of the 

 hood directs the rays of light towards the bull's-eye. The latter, of 

 unusual size (3 inches dia.), is supported by an independent support. 

 The advantage of this is that the entire illuminating apparatus may 

 be disconnected from the bull's-eye or the light directed otherwise than 

 through the bull's-eye if more general illumination is desired. The 



