Control of rats and mice (1948) (20505540739)

Title: Control of rats and mice
Identifier: controlofratsmic142stor (find matches)
Year: 1948 (1940s)
Authors: Storer, Tracy I. (Tracy Irwin), 1889-1973
Subjects: Rats; Mice
Publisher: Berkeley, Calif. : College of Agriculture, University of California
Contributing Library: University of California, Davis Libraries
Digitizing Sponsor: University of California, Davis Libraries



Text Appearing Before Image:
Fig. 2.—The roof rat. Important characteristics are the slender snout, large naked ears, and long slender tail which usually exceeds the combined length of head and body. The total length is up to 15 inches. The black rat is identical in form except for its black coat of hair.
Text Appearing After Image:
Fig. 3.—The house mouse. The eyes are small, the body is brown, and the tail scantily haired. The head-and-body length is 3 to 4 inches, and the tail 3 to 3Vi inches. pneumonic form in human beings. This form is spread by coughing (droplet in- fection) from one person to another. Of 32 human cases, 30 died. Plague is now well distributed among field rodents (as sylvatic plague) in many parts of the western United States, and some human cases have resulted. Rats in cities or towns may be reinfected from the surrounding field rodents, and thus be a health hazard. A few plague-infected rats have been found in California cities during recent years. Often when neither rats nor field rodents show visible signs of plague, the fleas from these animals prove to contain plague bacteria, thus maintaining the "reservoir" of this dis- ease among rodents. (7)