48 CARL SCHIØTZ. M.-N. Kl. 



be used about maturity itself, — the first menstruatiori of the girls and 

 the first sperm secretion of the boys. A certain definite time which goes 

 before, and when for one thing the developm,ent of secondary charac- 

 teristics of sex can he verified, may he called "pre-puherty", as it both 

 scientifically and practically deserves to be regarded as a distinct period. 

 Immediately hefore the beginning development of secondary characteristics 

 of sex the mentioned vigorous development of weight and height com- 



15. 



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Fig. 16 b. (see page 44). 



mences, which consistently ought to he counted in under the "pre-puherty" 

 period, as it separates itself as something new from the earlier child-age 

 proper and zvithout any doubt is connected with the development of the 

 genitals. 



It would now be of interest objectively to be able to demonstrate 

 the average sum total of development during childhood, pre-puberty, and 

 puberty. I specially emphasize the word "objectively", as we have a 

 popular scientific demonstration in S t r a t z's handsomely illustrated work 

 (last edition 1921). Yet not alone has here been sacrifized too much on 

 the altar of popularity, but the selection of photographs is in the highest 

 degree subjective, and the schedule of division with alternating "Perioden 



