THE CHARTS — VARIOUS DISEASES. . 81 



CHART XV. 



DISEASES OF THE URINARY SYSTEM. 



It may be proper to state, more particularly for the benefit of non-professional ' 

 readers, that neither syphilis nor gonorrhoea are included in this class of diseases. The 

 excessive ratio of rejection among married men is of course a concomitant of the rapid 

 increase with increase of age. As usual, the ratio increases with increase of height, 

 except in the case of the tallest men, who, in this class of diseases, as in many others, 

 seem to have been less affected than those a little shorter in stature. 



CHART XVI. 



DISEASES OF THE GENERATIVE SYSTEM. 



We find in this class of diseases, as in syphilis, that the single men were more 

 affected than the married. This is owing, doubtless, to the fact that gonorrhcea is 

 included in this class. The maximum prevalence, as to age, is reached at "20 and 

 iinder 25 ;'' from which point or period, olthough the diseases other than gonorrhoea 

 increase, the decrease in gonorrhoea more than compensates for such increase ; so that, as 

 a class, they diminish in prevalence, except as regards the oldest men, who would seem, 

 by reason of the usual infii-mities which have a pronounced beginning- at about forty- 

 five, to be very susceptible to urinary difficulties. In view of the remarks already 

 made on the apparent relation of height to disease, the increase of this class with increase 

 of height seems inexplicable, and is deserving- of careful study, as it points to an 

 obscure relation. 



CHART XVII. 



DISEASES OF THE ORGANS OF LOCOMOTION. 



In the main, tliis chart tends to confirm the general rules ; but a notable exception, 

 one that seems entirely at variance with the assumption that the younger men are the 

 shorter, will be observed. While those under twenty years of age show, by far, the 

 smallest ratio of rejection, those under sixty-one inches in height were found to be more 

 affected than any others. A perfectly satisflxctory explanation, however, of this apparent 

 contradiction is found in the fact that these diseases, from their very nature, tend to 

 shorten the stature. Men who, with certain other diseases, would attain the average 

 height, would, by these diseases, have their growth retarded, or even suffer a reduction 

 in their height by the shortening of one or both of the lower extremities. It will be 

 observed, however, that from sixty-three inches upward, the increase is continuous as 

 it is with age. 



CHART XVIII. 



DISEASES OF THE CELLULAR TISSUE. 



Only obesity and abscess are included in this class ; and the ratios are so small as 

 to render the results of the examination of small numbers of men questionable. To this 

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