81 



the Plasmodium malariae, a miuute organism living in and destroying 

 the red blood corpuscles. The parasites are transmitted from one person 

 to another by the mosquito. A certain cycle of the life history of the 

 malarial pai'asite takes place within the body of the mosquito and the 

 spores are injected from the salivary glands into and under the skin in 

 biting. 



Certain species of mosquitoes are the carriers to and fro of the infect- 

 ing organisms. They may in a general way be recognized by their spotted 

 wings and hy their peculiar position when at rest. 



The prevalence of malaria can be diminished by guarding against 

 mosquito bites; by isolating malarial fever patients, giving them sufficient 

 quinine and protecting them fx'om being bitten; by reducing the number 

 of breeding places of the mosquitoes by drainage. 



Individual prophylaxis is best attained by avoiding the bite of the 

 mosquito. 



A Shell Gorget Found Near Spiceland, Indiana. 



By Joseph Moore. 



All I propose to do in this brief paper is to give a history of the object 

 represented by the accompanying photograph, leaving it for others to tell 

 the meaning of the engraved design and also its relation to other speci- 

 mens of prehistoric art. About half a mile north of Spiceland, Henry 

 County, while some men were loading gravel and sand, they came to some 

 graves from whicli were taken two or three badly decayed human skele- 

 tons, the skull of a groundhog and the gorget which is the subject of this 

 report. One of the human skulls is well preserved and the other suffi- 

 ciently so to indicate its character. They represent rather a fine type of 

 head. 



The photograpli herewith presented is very nearly one-half the size 

 of the original, which is in length five and three-fourths inches. The 

 greatest breadth toward the wider end is three and one-eighth inches, 

 and that of the narrower end is two and one-half inches. 



