132 L. B. NICE 



No. 6 ran uniformly low; its maximum run was 86 895 revolu- 

 tions at the seventeenth week and its minimum run for an entire 

 week was 15 404 revolutions the twelfth week. It died the thirty- 

 fourth week. Its average weekly run was 62 435 revolutions. 



No. 7 was the most active of the alcohol line. It showed 

 great activity from the eleventh to the twentieth week. Its 

 maximum was 142 762 revolutions at the thirteenth week and its 

 minimum, not counting the first week, was 51 083 revolutions 

 during the twenty-ninth week. Its average run per week was 

 86 934 revolutions. 



No. 8 ran its maximum of 131 473 revolutions at the eleventh 

 week. It decreased steadily and near the end of the experiment 

 made some very small runs, of which 177 revolutions at the thir- 

 tieth week was the least. Its average weekly run was 57 908 

 revolutions. 



No. 9 showed great activity from the tenth to the twentieth 

 week, from the twenty-fourth to the twenty-seventh week and 

 again the thirty-second week. Its maximum run was 134 027 

 revolutions at the eleventh week and its minimum run, not count- 

 ing the first week was 67 089 revolutions at the thirty-fifth week. 

 Its average weekly run was 99 693 revolutions. 



No. 10 was the least active of this line; it rose gradually to its 

 maximum run of 106 697 revolutions at the fourteenth week and 

 then decreased to its minimum run of 10 253 revolutions at the 

 twenty-ninth week, but increased somewhat later. Its average 

 run per week was 58 843 revolutions. 



No. 11 shows a reversed record, for it ran low until its twenty- 

 seventh week. Its maximum run was 111 132 revolutions at the 

 thirty-fifth week and its minimum run 14 947 at the thirteenth 

 week when many of the mice were running their highest. Its 

 average weekly run was 65 006 revolutions. 



No. 12 exercised the most of all the sixteen mice. It 

 reached its maximum of 192 395 revolutions at the thirteenth 

 week and kept up its great activity throughout the experiment, 

 not going below 100 000 revolutions until the thirty-fourth week. 

 Its minimum run was 54 392 revolutions at the twelfth week. Its 

 average run per week was 124 886 revolutions. 



