The Microscope. 191 



Illustrated Price List op Instruments for Electrical Measurement, 

 ETC. A. K. Eaton, 191 Fulton St., N. Y. 



A Contribution to the Study op the Mango Weevil, by W. J. Sim- 

 mons, Esq., Calcutta, lleprint. 



On the Fresh Water Infusoria op the Wellington D strict, by W. 

 H. Maskell, F. R M. S., Wellington, N. Z. Two Reprint. 



The above contributions to microscopical science indicate the 

 excellent and .valuable work which is being done in such remote 

 countries as India and New Zealand. In both Calcutta and Welling- 

 ton the microscopical societies are in a flourishing condition, and 

 as we have already stated, are exerting a positive influence on the 

 advancement of science in those countries. 



The Puzzler is a new monthly, published by N. D. C. Hodges 

 of New York, and devoted to the riddles of the Sphinx. It is 

 unique in its way, enters a field until now unoccupied, and will be a 

 welcome source of amusement and recreation to many during leisure 

 moments. 



Phenological Stations, by Alexander Ramsey, F. G. S. Garner Reprints. 

 The Extraction of Cataract as Influenced by Mvcological Devel- 

 opment, by A. E. Prince, M. D. Reprints. 

 The Pulley Method op Ad/ancing the Rectus, by A. E. Prince. Reprint. 

 An Antiseptic Atmosphere. 

 Club Foot. 



Palatoplasty, by David Prince, M. D. Reprint. 

 Tax Reform. Speech of Hon. Alfred H, Colquitt, of Georgia, in the United 



States Senate, March 12, 1888. 

 Odr Ice Supply and Its Dangers, by T. Mitchell Prudden, M. D. Reprint. 

 Transactions of Michigan State Board of Health. 



CORRESPONDENCE AND QUERIES. 



W. L. A., Greenbush, N. Y. — Dr. Frank L. James described an 

 excellent method of preparing urinary deposits in the St. Louis 

 Medical and Surgical Journal. He epitomizes the method as fol- 

 lows: "The urine is allowed to settle in the usual manner and the 

 supernatant clear fluid drawn off with a pipette. Distilled water is 

 poured over the sediment, and after gentle agitation again allowed 

 to settle. I sometimes repeat this process two or even three times. 

 The last time I add a solution of osmic acid (1:100), about five min- 

 ims to the half-ounce of fluid. In a few hours, with exposure to the 

 light, the fluid turns inky black, and, on decanting, the epithelia, 

 casts, etc. will be found stained a uniform bluish-gray. I then again 

 cover with water and add a few minims of an aqueous (or alcoholic) 

 solution of eosin. Let settle, draw off the water and replace with 

 pure glycerin, and mount in the usual way. Such mounts will be 

 permanent." Though there are other methods, the above given will 

 prove most satisfactory. 



