John W. Doull, Bookseller, Inc.

Quick Search

Author/Illustrator
Title
Words appearing in our descriptions
Keyword(s)
 
 
 
 
   
Author Name:    SCHEFFER, Victor B. North American Fauna, Number 64

Title:   Pelage and Surface Topography of the Northern Fur Seal

Publisher:    United States Department of the Interior, Fish and Wildlife Service, Washington, D.C., 1962, 

Seller ID:   111394

SCHEFFER, Victor B. Pelage and Surface Topography of the Northern Fur Seal.(Washington, D.C.: United States Department of the Interior, Fish and Wild life Service, February 1962). Pp (2),iii-v,(1),1-206. Illustrated with 112 plates. 8vo, grey card covers, lettered in black. North American Fauna, Number 64. "The midsummer population of northern fur seals, Callorhinus ursinus, is estimated at 1,978,000. Of this number, 1,800,000 or 91 percent, originate on the Pribilof Islands. The Pribilof herd is capable of yielding 80,000 to 100,000 sealskins a year. The pelage of the adult seai is composed of clearly defined bundles, each with a coarse guard hair and 35 to 40 fine underfur hairs; there are more than 300,000 fibers to the square inch. Eachguard hair is accompanied by a sweat gland and two large sebaceous glands. Area of the haired surface of the body of the adult male is about 2.5 time s that of the female. The pelage of the pup resembles that of certain land carnivores in having small, scattered bundles, each containing 1 to 3 fibers, some of the fibers being underhairs and some overhairs (guard hairs). The first molt, from black birthcoat to silvery, adult-type molt, occurs about mid-September, the second in Augustst of the following year (on the yearling), the third in September of the following year (on the 2-year- old), the fourth and subsequent molts in late September or October. The molt in theadult takes 4 or 5 months. Molting lg has little effect on the commercial value of a sealskin, provided the skin has been taken before September. Dominant color of the adult pelage is light brownish gray; most seals are darker on back and chest, lighter on belly, throat, and sides. Color patterns of the sexes are indistinguishable up to age 2 or 3 years; coior patterns ofseals from American and Asian waters are indistinguishable. Colors are bri ghter (less brownish) in winter when the seal is at sea and has completed its autumnal molt. In addition to mutant color phases such as albino, piebald, and chocolate, one may see atrichia, pediculosis, pachyderma, and other skin disorders; and foreign growths, including marine algae and barnacles, on the guard hair. The flippers are naked. The only functional claws—used exclusively for grooming the pelage—are on the middle three digits of each hind flipper. The blubber on the fur seal is thinner than on phocids or hairseals. From a fur seal weighing 66 pounds about 0.6 gallons of blubber oil can be rendered." (Abstract, p. v). Spine sunned, circular library inkstam ps, else very good. 20.00


Price = 20.00 CDN
Add to Shopping Cart


Questions, comments, or suggestions
Please write to [email protected]
Copyright©2018. All Rights Reserved.
Powered by ChrisLands.com

 

 

cookie