1 84 THE MICROSCOPE. 



%tzras. 



Impromptu Condenser. — Prof. Rinefleisch suggests that the 

 absence of a condenser may, on emergency, be supplied by a drop 

 of distilled water placed on the lower surface of the slide, where it 

 will act as a convex lens. 



Potted Meat. — A dealer in potted meat in Bradford, Eng- 

 land, has been committed to prison for two months, for preparing 

 for food thirty-six pounds of horseflesh. He purchased a quantity 

 of cat's meat at a penny a pound, and an inspector found it stewing 

 in a pan with a few pounds of pigs' heads. 



The Parasite of Malaria. — The observations of M. Richard 

 seem to affirm those of Leverau; he found in the red corpuscles of 

 the blood of persons suffering from acute malaria, a parasite of 

 oscillating form moving very rapidly, and sometimes disengaging 

 itself from the globule. These parasites have been met with in a 

 number sufficiently large to obstruct the capillary vessels, and to ex- 

 plain many of the symptoms of intermittent fevers. It has also 

 been proven that the culture of these parasites in a fertile gelatine 

 basis can be brought to an immediate cessation if a two per cent, 

 quinine solution is added. 



Slides with Hollows for Chemical Reactions. — Many of 

 the advantages of the pillar slides for the observation of chemical 

 reactions may be obtained by using polished glass slides with one or 

 more hollows. 



In using these the drop of fluid to be examined is placed by 

 the side of the hollow, or between them, if there be two or more, 

 and the cover is allowed to project over the hollow or hollows a 

 little distance; under this projecting edge the drop of reagent is 

 placed, and the bit of blotting paper may be used as usual upon the 

 slide if desired. — R. J. Nunn, M. D., Savannah, Ga., extracts from 

 his paper before the State Microscopical Association of Georgia. 



E. B. Tylor in Nature says that the microscopic examination of 

 the cross section of a single human hair is sufficient to determine to 

 which one of the race divisions of humanity the wearer belongs. If 

 examined microscopically by Pruner's method, it shows circular, or 



