Fisher — The Effect of Diet on Endurance. 19 



From it we see that with one exception (E.) all of the men had im- 

 proved in the March and June tests as compared Avith the January 

 tests, and the eight men who did improve showed improvement in 

 ever}^ test, except Lq., Lw. and T., who showed slight falling off in 

 individual cases. 



As inspection will show, some of the increases are remarkable. 

 The recorded increases in the 60 odd cases were, with a few excep- 

 tions noted below, all true increases and not due to increased effort 

 to break a previous record. In anticipation of such possible effect 

 of ambition, the men were urged in the January tests to the utmost 

 limit they could or would stand. The original intention had been to 

 work each muscle tested until it was physically unable to repeat the 

 motion, but thi§ was not usually found practicable, except in tests 3, 4 

 and 6, and in some cases 2. In the other tests the will gave out before 

 the muscles. The March and June tests were so managed that when 

 a man had surpassed his January record he was not allowed to pro- 

 ceed beyond the degree of fatigue which he had reached in the first 

 test. This was usually not a difficult matter, as the fatigue in 

 January had been excessive and the men had no desire to suffer 

 again the painful after-effects. Hence, with the exceptions to be 

 noted, the March and June records not only exceeded those of Jan- 

 uary, but were accomplished with much less fatigue. The actual 

 improvement was therefore greater than the recorded improvement. 



or three tests which he had taken in January. This explains why, in the Mai'ch 

 series, the tests as shown in the tables ai*e not the same for all the men. The 

 order of the January and June tests for the different men is given below. The 

 tests which were taken in March are in italics. 



