After several weeks of painstaking search, I can now state definitely: argyrodite contains a new element, very similar to antimony and yet sharply distinguished from it, to which the name germanium shall be given.
Definition of Bergenia. 1 : a genus of perennial spring-blooming herbs (family Saxifragaceae) native to central and eastern Asia that have large thick rootstocks which produce typical colonies or clumps of plants with very thick heavy leaves.
The Norway rat (Rattus norvegicus, Fig. 1) is a stocky burrowing rodent, unintentionally introduced into North America by settlers who arrived on ships from Europe. Also called the brown rat, house rat, barn rat, sewer rat, gray rat, or wharf rat, it is a slightly larger animal than the roof rat (Fig. 2).Adult Norway rats weigh an average of 1 pound (454 g). Their fur is coarse and usually brownish or reddish gray above and whitish gray on the belly.he presence of rats can be determined by a number of signs described below: Droppings may be found along runways, in feeding areas, and near shelter. They may be as large as 3/4 inch (2 cm) long and 1/4 inch (0.6 cm) in diameter. Fresh droppings are soft in texture.