THE PINEAL BODY 173 



It consists of large parenchymal cells, neuroglia, and lym- 

 phatic elements. It is very vascular. Cutore could find no 

 muscle cells. Some observers have found brain sand in the 

 organ. 



2. Sus scrofa domesticus. Faivre ('55), 114 Hagemann (72) ; 164 

 Flesch ('87) ; 121 Favaro ('04) ; 118 Cutore ('10). 76 In this form the 

 pineal body is long and pointed toward its distal extremity. 

 Its diameters are: 



cm. 



Longitudinal 1.0 



Transverse 0.5 



Anteroposterior 0.4 



Fibers connect it with the ganglion habenulae and the pos- 

 terior commissure. It contains no concretions and no pigment. 

 Histologically it resembles the pineal body of Bos taurus. 



3. Capra hircus. Malacarne ('95) ; 258 Hagemann (72) ; 164 

 Staderini ('97) ; 372 Cutore ('10). 76 In this species the pineal 

 body is relatively short and conical. Its diameters are: 



CT/l. 



Longitudinal . 70 



Transverse . 55 



Anteroposterior 0.45 



Malacarne described brain sand in the organ. Cutore could 

 find neither concretions nor pigment. Fibers connect the base 

 of the epiphysis to the posterior commissure and habenular 

 region. 



4. Camelus dromedarius. Parisini. 300 In this form the author 

 described concretions. 



5. Ovis aries. Flesch ("87) ; 127 Dimitrova ('01) ; 92 Favaro 

 ('04) ; 118 Jordan ('II). 199 In the adult of this species Jordan 

 describes signs of degeneration, including hyperplasia, brain 

 sand, clumps of pigment granules, and a decrease of parenchymal 

 cells. 



PERISSODACTYLA. 1. Equus caballus. Faivre ('55) ; 114 Hage- 

 mann (72) ; 164 Ellenberger ('87) ; 110 Flesch ('88) ; 123 Favaro ('04) ; 118 

 Cutore ('10). 76 In this species the pineal body is conical. Its 

 diameters are: 



