United States or Ecuador ? Vote for the TOP Country of the Week !
The Surinam toad is one of the most curious, though, at the same time, among the most hideous of batrachians. It is remarkable on account of the extraordinary way in which its young are developed. The skin of the female is separated, as is the case with others of its family, from the muscles of the back, and is nearly half an inch thick.
Absence of Batrachians and of terrestrial Mammals. On the relation of the inhabitants of islands to those of the nearest mainland. On colonisation from the nearest source with subsequent modification. Summary of the last and present chapters.
Nothing but a streak out of a fifty-dollar lecture. As when, at some unlooked-for moment, the mighty fountain-column springs into the air before the astonished passer-by, silver-footed, diamond-crowned, rainbow-scarfed, from the bosom of that fair sheet, sacred to the hymns of quiet batrachians at home, and the epigrams of a less amiable and less elevated order of reptilia in other latitudes.
There has been much less extinction of the forms of life which once connected fishes with Batrachians. There has been still less within some whole classes, for instance the Crustacea, for here the most wonderfully diverse forms are still linked together by a long and only partially broken chain of affinities.
Let him do that, and he shall always be made welcome; yes, even though he come in force and in cherry-time. If he were, he would hardly speak so disrespectfully of these batrachians. Mr. C. N. Allen, in Bulletin of the Nuttall Ornithological Club, July, 1881.
Fish, batrachians, reptiles, mammals; in which latter are included the marsupials as well as lemurs, primates, Man. And after what struggles Man assumed an erect position and looked into the eyes of his mate! After Man? Nietzsche preaches that man is a link between the primate and Superman; Superman the angels!
S. V. Clevenger considers these organs to have had a branchial or respiratory origin, saying that there are many reasons for believing them to be rudimentary gills. Owen says that the thymus appears in vertebrates with the establishment of the lung as the main or exclusive respiratory organ. It is wanting in all fishes, also in the gill-bearing batrachians, siren and proteus.
These fragments were in the state of charcoal, and seem to have fallen to the bottom of the hollow tree while it was rotting away. Dr. Wyman of Boston pronounced the reptile to be allied in structure to Menobranchus and Menopoma, species of batrachians, now inhabiting the North American rivers.
Yet if we compare the older Reptiles and Batrachians, the older Fish, the older Cephalopods, and the eocene Mammals, with the more recent members of the same classes, we must admit that there is some truth in the remark. Let us see how far these several facts and inferences accord with the theory of descent with modification.
He cites an instance of six testicles four of which were of usual size and two smaller than ordinary. Baillie, the Ephemerides, and Schurig mention fusion of the testicles, or synorchidism, somewhat after the manner of the normal disposition of the batrachians and also the kangaroos, in the former of which the fusion is abdominal and in the latter scrotal.
Word Of The Day