72 THE SEX-COMPLEX 



extracts. I have discussed the subject at considerable 

 length elsewhere 1 . There are, however, a few important 

 details to which allusion is necessary. 

 Effects of Intravenously and intramuscularly injected extracts 



injections of ., ., . i -i . 1-11 



infundibuiin. of the pars posterior exhibit remarkable pressor pro- 

 perties in regard to all unstriped muscles ; as a result of 

 this the blood-pressure is immediately raised and main- 

 tained at a high level for a considerable time ; similarly 

 the normal uterine and intestinal contractions and tone 

 are greatly increased. 



How these properties have been utilized by the 

 introduction of infundibuiin into surgical and obstetrical 

 practice 2 , and how universal has become its use in shock, 

 intestinal paresis and uterine atrophy is within the 

 knowledge of all. 



Ott and Scott 3 first showed that the same extract 

 is a galactogogue. It is not definitely known how this 

 result is produced. It would be interesting if it were a 

 fact, of which we have no proof, that the pituitary 

 hormone normally promotes the secretion of milk. 

 It is, however, most probable that after the birth of the 

 child the stream of metabolic products directed to its 

 maintenance and growth in the womb are diverted to 

 the mammary secretion, which is to supply the post- 

 natal necessities of the young infant. 



Effects of The late results that have been obtained by continued 



^tracts!* 11 i n J ec ti ns an d ingestions have been very conflicting. 



the pituitary. Rosalind Wulzen 4 found that the growth of young fowls 

 was retarded by the addition of fresh unmodified 

 anterior lobe of ox pituitary. 



Goetsch 5 , on the other hand, has found that the 

 administration of dried and powdered pars anterior 



1 Bell, W. Blair, The Pituitary, 1919. 



2 Bell, W. Blair, Brit. Med. Journ., 1909, vol. i, p. 777; idem, 

 voL ii, p. 1509. 



3 Ott, L, and J. C. Scott, Proc. Soc. Exper. Biol and Med., 1910- 

 1911, vol. viii, p. 48. 



4 Wulzen, R., Amer. Journ. Physiol., 1914, vol. xxxiv, p. 127. 



5 Goetsch, E., Bull. Johns Hopk. Hosp., 1916, vol. Ixxvii, p. 29. 



