THE MORPHOLOGY OF THE HYPOPHYSIS IN LOWER VERTEBRATES, PARTICULARLY FISH AND AMPHIBIA, WITH SOME NOTES ON THE CYTOLOGY OF THE PITUITARY OF INCARASSIUS AURATUS (THE GOLDFISH) AND NECTURUS MACULOSUS (THE MUDPUPPY)

Abstract

There appear to be ever increasing perplexities growing out of the multitudinous researches being perpetrated on the hypophyseal complex of the mammal. It has been suggested by some of the more valiant souls that relief may be found by a re-examination of the morphology of this structure in the lower vertebrates. Carlson, in his foreword to Van Dyke's monograph The Physiology and Pharmacology of the Pituitary Body, points out that the phylogeny of the pituitary-gland functions is a field of interest as yet inadequately explored. De Beer, in the preface to his book Comparative Anatomy, Histology and Development of the Pituitary Body, published eleven years ago (1926) makes the statement that since the pituitary is a complex organ, far more so than is generally supposed, any attempt to deal with it experimentally, either by preparing extracts or by excision, must be preceded by a knowledge of the anatomy of the...