THE CAEOTID AND COCCYGEAL GLANDS 459 



The nature and genesis of the glandular cells is somewhat 

 doubtful. They are ovoid elements with finely granular cyto- 

 plasm and a spheroid- 



al, somewhat vesicu- s 



lar nucleus. Many of \ ,/ 



them contain a yellow- ^ >.' 

 ish pigment which is 



intensified by fixation . ~~ 



in solutions of potas- *J 

 sium bichromate ''m/f'^ 



(Kohn). This is the jff;*ff 

 so-called chromofine 

 reaction which is like- 

 wise exhibited by the / 



medullary cells of the 



Suprarenal glands and FlG ' ^.-CAROTID GLAND OF AN APE. 



hv man v TIPT-VP ppll* Chr9 > a " chromofine cel1 " J *i connective tissue sep- 



U J l "v 1 turn. Portions of two adjacent lobules are included in 



The Carotid gland the figure, x 200. (After Kohn.) 



is richly supplied with 



capillary blood vessels and small non-medullated nerve trunks. The 



capillaries are in intimate relation with the glandular epithelium. 



V. THE COCCYGEAL GLAND 



This small body 2.5 mm. in diameter (Eberth) was discov- 

 ered by Luschka * in 1860. Its structure closely resembles that of 



the carotid gland. 

 It usually consists 

 of several minute 



/ ' \ groups of epitheli- 



/ ' >, Ibid cells which are 



/ in relation with the 



/ r t'-; '"I terminal branches 



; / of the middle sac- 

 ral artery. It is 

 richly supplied with 

 broad capillaries or 

 sinusoids and hence 

 is also known as 



FIG. 364.-FROM A SECTION OF THE COCCYOKAL GLAND OF the ffhmUS COCCy- 

 MAN. Highly magnified. (After Sertoli.) 



* Arch. f. path. Anat., 1860. 



