RELATION OF FOOD TO WORK, AND 293 



by Mm wlien suffering from diabetes, by the digestion of flesh food and 

 production of urea. 



2. I have ah^eady shown that the work produced by the formation of 

 501.28 grains of urea is 704 foot-tons by calculation from the composition 

 of proteine and urea. This result should be reduced in the proportion 

 of 48375 to 43155, in order to obtain the work given by Professor Frank- 

 laud's experiments. Making this reduction, we find that 500 grains of 

 urea correspond to G2G.3 foot-tons of work, or 100 grains urea to 125.2G 

 foot-tons; or, in other words, every four grains of urea excreted correspond 

 to five tons lifted through one foot. 



Owen Murphy excreted, on an average, 1,182 grains of urea daily 



during nine weeks, which, by the foregoing rule, are equal to — 



1475 foot-tons = Murphy x x 



where x represents in miles the height through which the patient could 



be lifted by the work done per day, and is equal to — 



1475 X 2240 ^ po ., 



^=7771-^. F-TTTi = 6.G9 miles. 



93.00 X 5280 



This result is almost exactly equal to that already found as the min- 

 imum consistent with continued life, and explains in the most satisfactory 

 manner the complete prostration of the patient, notwithstanding the con- 

 sumption and digestion of more than double the usual quantity of flesh 

 food. 



In corroboration of the foregoing conclusion, I may mention that 

 Murphy's temperature was found to be constantly 2° F. below that of 

 other patients (chronic) placed in the same ward, and, in other respects, 

 under similar conditions. 



His unfavorable symptoms (so long as his powers of digestion were 

 not impaired) were invariably alleviated by the free use of flesh food 

 and fat, the latter being instinctively preferred by him ; so much so, 

 that during the delirium that preceded his death for twenty-four hours, 

 he raved incessantly about "fat, roasted fat, which the angels of heaven 

 were preparing for him." 



I have studied many other cases of diabetes mellitus^ and found similar 

 results in all; but I feel it to be unnecessary to describe them, as one 

 well-ascertained train of phenomena, carefully observed and recorded, 

 is quite sufficient to establish the order of nature. 



CONCLUSION. 



I have, now, Mr. President and gentlemen, to apologize for the length 

 of time during which I have spoken, and to thank you for the patience 

 with which you have listened to me. I am well aware how much I am 

 indebted to your kindness, for I labored under two serious disadvantages 

 in addressing you — in the first place, 1 had undertaken a task beyond 

 my strength; and again, my address is made shortly after you had, 

 like myself, been charmed and instructed by the luminous, learned, and 



