92 THE CHARTS LOCALITY CLASS }V. 



under thename of each disease, and to the right hand of the name of each State. The 

 scale of diseases shows that the class which caused the greatest number of rejections 

 was diseases of the digestive system, (numbered 1 ;) the fewest being caused by diseases 

 of the cellular tissue, (numbered 14.) Between these extremes the otlier classes of 

 diseases are numbered upon the same principle. As an example of the use of this chart 

 or table, let us see how the State of New York stood, relatively to the other States, 

 in regard to rejections on account of diseases of the circulatory system. In the column 

 allotted to this class of diseases, and on a line with the name of the State, we find the 

 figure 5, which indicates that in Chart XLVI, where the list of States is arransred in 

 the order of the greater or less prevalence of these diseases. New York stands fifth — 

 four of the States showing a greater ratio of rejection, and seventeen a less. Following 

 up and down this column, we can ascertain what States had more, or less, of these diseases 

 than New York, because any number smaller than 5 will be opposite the name of a 

 State more affected, and all numbers larger than f^ will denote the contrary. At the 

 foot of this same column, and opposite " Scale of Diseases," we find the figure 9, which, 

 as before explained, shows, in a scale of 1 to 14, the prevalence of the disease relatively 

 to other diseases. A little study of this chart will enable the reader to obtain with little 

 trouble many facts of much interest. 



Class IV consists of only two charts, and they do not illustrate disease, but the 

 relations of nativity and age to height, (Chart LIX,) and to girth of chest, (Chart LX.) 

 As the subjects of height and girth of chest have been fully discussed in the pre- 

 ceding part of this volume, comment upon these charts becomes unnecessary ;' but the 

 attention of the reader is particularly directed to them as of very great interest etlmo- 

 logically considered. 



In conclusion, it may be said that not only those charts which have been specially 

 commented upon, but also all the others showing the relation of various diseases to the 

 various circumstances of life, abound in suggestive indications, which, being presented 

 in such a manner as to be understood at a glance, will, it is to be hoped, lead to dis- 

 cussions that .shall eventuate in the advancement of knowledge upon the subjects of 

 causation and cure of maladies that now bafiSe all our skill. Should they, however, 

 cast no immediate positive light upon the problems, they may nevertheless serve to over- 

 throw false theories that now block the way to advancement, and thus, in an indirect 

 and a negative manner, lead to good results. 



' See ante, pp. 14-50. 



