380 



THE DUCTLESS GLANDS 



1. Evolutionary or phylogenetic 

 infantilism 



2. Developmental or ontogenetio 

 infantilism 



A . InfantiK:;m of celVi 



B. organs 



C. the individual as 



whole 



> 



Class I. Symptomatic General Infantilism 

 Infantilism as a fluctuation 



A. Toxic 



B. Correlative C. Deprivational 

 of mixed causation 



(a) Endocrinous (6) 

 Simple 

 correlative 



Class II 



Essential Infantilism 

 Infantilism as a mutation 



\ 



Progeria 

 Infantilism 

 " Senilism " 

 Premature old age 

 (Cushing thinks these two are possibly pituitary diseases.) 



Ateleiosis 

 continuous youth " 



Mr. Hastings Gilford believes that only one form of in- 

 fantilism has been absolutely proved to be due to a deficiency 

 of internal secretion, and this is thyroid infantilism. This is 

 frequently referred to as myxinfantilism (Brissaud's type). 

 This author sees no objection to the use of the term " pituitary 

 or Frohlich's infantilism," but thinks that we are not yet 

 justified in affirming finally that it is the result of a deficiency 

 of pituitary hormones. 



Gushing includes the Lorain type as of pituitary origin. 



