It was originally supposed, mainly as the result of experiments on dogs, that the presence of the pituitary body was essential to life (see Cushing (1912) for discussion and references). Recent work, however, has shown that, in many species, the removal ...

It is now well known that removal of the anterior lobe of the pituitary body in mammals leads to atropy of the gonads and thence of the accessory reproductive organs, but this generalization has not hitherto been extended to birds. It would be expected ...

In the larger domesticated animals, clinical methods for diagnosing pregnancy are inadequate or unsatisfactory during the first third of the gestation period, and in individual instances for a longer period. In comparison with most other animals, œstrus ...

From a series of experiments on Brown Leghorn fowls Juhn and Gustavson (1930) suggested that the production of the red pigment in the breast feathers of the castrated male of this breed might be used as an indicator of the female hormone (œstrin). They ...

The bodies known as Corpora Lutea must be considered from several points of view: (1) their anatomy and histology; (2) their development and origin in the individual; (3) their functions, or influence on other organs, and the effect on them of processes ...

The existing theory for the action of hæmolysins treats the phenomenon as the result of an irreversible reaction between the lysin and some component of the cell membrane, this leads to a loss of semi-permeability of the cells, which are supposed to have ...

In 1884 Etheridge and Foord published a detailed description of the Polyzoan Favositella interpuncta (Quenstedt) from the Wenlock Limestone of Dudley, remarking on its “mural pores,” which were exceptionally large and showed a somewhat irregular ...