The morphology and evolutional significance of the pineal body : being part I of a contribution to the study of the epiphysis cerebri with an interpretation of the morphological, physiological and clinical evidence . caudal to it a short pars intercalaris posteriorfollowed by the posterior commissure (fig. 3). Among the early workers in this region in teleosts are listedsome of the great pioneer names in morphology. AlbrechtHaller in 1768165 described the epiphysis in the carp, but didnot find it in the trout. Cuvier in 184577 also observed it inteleosts, and Carus in 181459 found it to be a s
The morphology and evolutional significance of the pineal body : being part I of a contribution to the study of the epiphysis cerebri with an interpretation of the morphological, physiological and clinical evidence . caudal to it a short pars intercalaris posteriorfollowed by the posterior commissure (fig. 3). Among the early workers in this region in teleosts are listedsome of the great pioneer names in morphology. AlbrechtHaller in 1768165 described the epiphysis in the carp, but didnot find it in the trout. Cuvier in 184577 also observed it inteleosts, and Carus in 181459 found it to be a saccular formationextending from the dorsal region of the brain. Tiedemann394 FREDERICK TILXEY AXD LUTHER F. WARREN in 1816 could not find it in the bony fish, while (iottsche154 in1835 found it in these animals, but thought that it was connectedby blood vessels or a membrane with the ganglion habenulaeand the commissura habenularis. Mayer in 1S64265 gave adescription of the epiphysis as being merely a vascular convolu-tion in the roof of the interbrain, while Owen294 in 1866 was notat all sure of its existence even as a vascular convolution of theroof-plate. In 1870 Baudelot14 described the epiphysis as a vf. Tp Sch Cp Fig. 3 Schematization of pineal region in Teleosts, according to Studnicka,1905. />. lamina terminalis; Pf., paraphysis; Ds., dorsal sac; P., velum transversum; (h., ronmiissura habenularis; Po., pineal organ; Si., stalk of pineal organ; 7/.,tr;ietus pincalis; Sch., pars intercalates anterior; Cp., commissura posterior; round or pear-shaped body bet \veen the lobi optici. The firstexact description of the organ was given by Rabl-Riickhard819in ISXo on the basis of microscopic sections. Cattie60 in 1882described the gross appearances of the organ in a large number ofleleosis, and Hilllso in 1894 gave one of the most detailed andreliable accounts of this region in teleosts, basing his descriptionon \\\> findings in salmon. Other excellent desc
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