Charles Sedgwick Miiiot 97 



"organizatiou of the epiphysis and of the parapliysis indicates that they 

 supply by secretion special chemical substances to the encephalic fluid. 

 It remains, therefore, for the physiologist to investigate these glands 

 and to determine how far their action is indispensable to the brain, and 

 for the pathologist to investigate the possible relations of diseases of 

 these glands to cerebral disorders. The pathological study of these or- 

 gans seems to me all the more important, because I regard as reason- 

 able the anticipation that the paraphysal gland will be discovered in 

 man. 



EXPLANATION OF THE LETTERING. 



Ao., aorta. 



Chi., optic chiasma. 



Ep., Epiphysis. 



Ec, Ectoderm. 



F. B., fore-brain. 



H. B., hind-brain. 



Ily-, hypophysis. 



Inf. g., infundibular gland. 



L. cli., lateral choroid. 



M. B., mid-brain. 



M., mouth. 



ncJi., notochord. 



Oc, oesophagus. 



P., paraphysal arch. 



Par., paraphysis. 



p. c, posterior commissure. 



Plx., choroid plexus. 



sk., anlagc of skull. 



s. c, superior commissure. 



v., velum. 



Ye., jugular vein. 



1, praemandibular head-cavity. 



2, mandibular cavity. 



3, hyoid cavity. 



