Sea of Marmara about 22 parts per thousand, which is slightly greater than that of the Black Sea, but only about two-thirds that of most oceans. The water is much more saline at the sea bottom, averaging salinities of around 38 parts per thousand, similar to that of the Mediterranean Sea. This high-density saline water, like that of the Black Sea, does not migrate to the surface. Water from the Susurluk, Biga (Granicus) and Gonen Rivers also reduces the salinity of the sea, though with less influence than on the Black Sea. With little land in Thrace draining southward, almost all of these
An essay on the classification of the parasitic Hymenoptera of Britain which correspond with the Ichneumones minuti of Linnaeus less simple and natural. Of the genera, seven had been previously established (but not all equally well defined) by Fabricius,Latreille, Schrank and Jurine; the rest we owe to the labours of the same accomplished naturalist, who has besides described at length a considerable number of the European species; of which, also, several will be found dispersed among the Fabrician genera, and more collected and arranged in the Ligurian Fauna of Spinola. Seven species only are noticed by Linne; two of which are placed among his Ichneumones majores, four with the minuti, and one is appended to thegenus Cynips. The little