Word: norvegicus
(lookup in dictionary)
(lookup stats)
Dates: during 1920-1929
Sort By: most recent first
(reverse)
...experiments with rats, Dr. H. W. Feldman '26, as National Research Fellow, has continued his studies of fertility and sterility both within the species Rattus norvegicus, and in crosses between it and Rattus rattus. Several previous investigations have found this cross invariably unsuccessful, but Dr. Feldman found that under favorable circumstances normal matings can be induced between norvegicus females and rattus males, and that hybrid embryos may be produced. For some reason, however, these embroyos die and are either resorbed or aborted before the completion of the normal gestation period. The longest continued gestation for hybrid embryes thus far observed...
...another, they were, as mice go, famed. They had arrived in the luggage of Explorer-Engineer Grant Carveth Wells of England, who was going to take them to the American Museum of Natural History, where they would be mounted against a background of bleak tundra and labeled Lemmus norvegicus, the lemming. Stubby of tail, tawny of fur, blunt of snout, five inches long, lemmings are probably the only mice that ever excited awe in both sexes of human kind. Not Aesop's mouse who gnawed a lion free; not the three blind mice whom the farmer's spouse...