368 THE AMERICAN MONTHLY [Nov. 



vender on whose premises had existed a case of typhoid fever 

 The liealth officer who investigated the matter reported that 

 the ice-cream was manufactured in close yards, and the articles 

 used in the manufacture were flour, milk, eggs, sugnr, and fla- 

 voring essences, which were for the most part stored in evil smell- 

 ing sl°eping-rooms. In no instance were the shells of the eggs 

 used broken. They were pierced at each end, and blown by 

 the mouth, the perfect shells being sold to the proprietors of 

 shooting galleries. Three samples of water taken from barrows 

 and three samples of ice-cream were submitted to Dr. Klein, of 

 St. Bartholomew's Hospital, on September 18. Dr. Klein re- 

 ported that the first three samples were rendered turbid by 

 small flocculi in suspension, and in each case there was a floc- 

 cular white precipitate. A microscopic examination revealed 

 in each of the samples of water and ice-cream an abundance of 

 microbes. 



MEDICAL MICROSCOPY. 



A Quick Method for the Filtration of a Small Quantity 

 of Urine. — For a very long time it has been a problem to know 

 how, with tiie apparatus usually at hand, to obtain quickly and 

 easily a small quantity of clear urine from a cloudy specimen in 

 order to make the usual test for albumen. 



The following plan, which has proved extremely easy and 

 satisfactory in my own case, will I think, be found equally so 

 in the hands of others: A small quantity of the cloudy urine is 

 placed in a test-tube, and the mouth of the tube plugged with 

 cotton to a moderate degree of firmness. A second test-tube is 

 placed with its mouth to the first. The position of the tubes is 

 now reversed so that the one with the urine is bottom upward. 

 The upper tube is now carefully and gently heated over the 

 flame of a Bunsen burner or an alcohol flame, and the expan- 

 sion of the air above the urine immediately forces it through 

 the cotton plug, and the filtered urine collects in the lower tube. 

 In this way we imitate to a degree the rapid-filtering apparatus 

 of laboratories, but use pressure above the fluid to be filtered 

 instead of an air-exhaust below. — L. F. Bishop in Boston Med- 

 ical and Surgical Journal. 



