,14 



EFFECT OF DIET ON THE ALBINO RAT 



number of revolutions which each of the exercised rats voluntarily made 

 during its lifetime. 



Table III represents the total number of revolutions of each rat 

 at the ages indicated. To give a better idea of the amount of work 

 equivalent to these revolutions, the actual distance in miles has been 

 computed and shown in Table IV. By consulting these tables it is 



OMNIVOROUS EXERCISED RATS | VEGETARIAN EXERCISED RATS 



Age 



Male 



Male 



Female 



Male 



VTale 



Female 



Female 



Female 



in 

 Mo. 



No. I 



No. 2 



No. 3 



No. 4 I 



^0. 5 



No. 6 



No. 7 



No. 8 



I 



I 



2.6 



1.8 



1-7 



1-7 



I 



.6 



2.4 



2 



16 



22 



19 



19.6 



31-5 



22.6 



19.1 



41.7 



3 



68 



77 



95 



100 



122 



50.6 



65 



126.6 



4 



121 



160 



170 



210 



168 



67.6 



113 



202.5 



5 



211 



273 



336 



346 



211 



83.4 



153 



242 



6 



278 



373 



572 



495 



234 



94-7 



200 



309 



7 



341 



434 



882 



555 



257 



112.4 



246.5 



345 



8 



414 



551 



1181 



658 



297 



134-7 



317-3 



410 



9 



487 



663 



1435 



740 



S05 



159 



382 



487.5 



lO 



612 



832 



1710 



810 



S45 



187 



470.5 



559 



II 



691 



915 



1980 



876 



370 



190.5 



492.6 



589 



12 



749 



1023 



2230 



945 



396 



202.3 



508.3 



613 



13 



812 



1155 



2490 



1036 



\^7 



207 



537-7 



635 



14 



900 



1318 



2780 



1115 



^28.6 





552 



655 



15 



986 



1390 



3020 



1168 



133-4 





581.9 



665 



i6 



1020 



1490 



3230 



1220 



iS6.5 





592.3 



667 



17 



1080 



1560 



3460 



1270 I 



^0.6 







669.6 



i8 



IIIO 



1665 



3650 



1298 



W4-7 







671.5 



19 



1125 



1747 



3890 



1325 



W5-7 







672.6 



20 



1165 



1850 



4125 



1347 



W7 





.... 



673-7 



21 



1188 



1862 



4280 



1358 



H8.5 





.... 



675 



22 



1210 



1920 



4475 



1362 I 



M9-7 







676 



23 



1225 



1980 



4620 



1380 I 



^50.9 







677.1 



24 



1244 



2025 



4720 



1385 











25 



1265 



2050 



4810 



1389 











2b 





2074 



4900 



1391 







.... 





27 







2090 



5000 











.... 





28 







2093 



5100 







. . . 









29 







2095.6 



5180 





. . . 









30 







2097 



5250 













31 







2097.7 



5300 





. . . 









32 







2098 



5350 















33 









5430 









.... 





34 



.... 1 





5447 















Table IV. — Comparative number of miles run by the omnivorous and vege- 

 tarian rats in the revolving cages at the ages indicated. 



