130 



PROBLEMS OF RELATIVE GROWTH 



dimension, so that the chest is much shortened, the legs 

 slightly lengthened. 1 For some reason, this inverse correla- 

 tion between breadth- and length-growth does not seem to 

 have affected the head region (Fig. 69, right). 



While many details remain obscure, these cases at least 

 provide excellent examples of graded abnormalities of growth- 

 intensity. Professor C. R. Stockard has drawn my attention 

 to a similar case, but affecting an isolated organ only. Streeter 



Fig. 69. — Graded-growth effects in two human monsters. 

 (See text for details.) 



(1930), in his Plate 12, figures a case of isolated hypertrophy 

 of a single human finger. The point which interests us, how- 

 ever, is that the proportions of the phalanges appear to be 

 abnormal, and to have been affected in a graded way. 



While on the subject of abnormal growth, we may refer to 

 some cases of dwarfing and gigantism. Sir Arthur Keith has 

 kindly let me see some MS. notes on this subject. There are 



1 This interpretation is not identical with that of Mead, who pre- 

 fers to think mainly in terms of the ' law of developmental direction '. 



