AND PERSONALITY 



Nureddin with the Shetland pony of the bleak and frigid 

 north. 



Although the Shetland pony weighs the least of these 

 four animals and the energy-controlling organs weigh the 

 most in Equipoise, it will be seen that the Shetland pony 

 possesses the highest ratio of energy-controlling organs to 

 the body weight. By using the power formula we can see 

 this more accurately. 



The power formula, also known as the "relative-growth 

 equation," 1 offers a means to compare the degree of glan- 

 dular and organ development in animals of widely varying 

 weights. This makes it possible to overcome the usual 

 difficulties involved in evaluating the relative organ weight. 

 Thus, the relative brain weight of the mouse may be higher 

 than that of man, being in the ratio of 1:28 against the 

 human ratio of 1 140. Measured on the power-formula scale, 

 however, the mouse stands at the 0.1222 level, and man 

 stands at the 3.415 level. In other words, if we imagine the 

 mouse brain fixed at 0.1222 feet above the base line of the 

 developmental scale, the human brain will tower above 

 that of the mouse at a level of 3.415 feet, or 24.31 times that 

 of the mouse. Whenever, in these chapters, data are given 

 in terms of the power formula, it should be borne in mind 

 that the smaller figures indicate lower degrees of develop- 

 ment of the particular structures in question. 



The power formula gives the following values for these 

 members of the horse family: 



BRAIN VALUE THYROID VALUE ADRENAL VALUE 



Nureddin 0.5327 Equipoise 0.6003 Nureddin 0.3282 



Zebra. 0.6431 Zebra 0.6285 Zebra. 0.4740 



Equipoise 0.6539 Shetland pony. . 0.6907 Equipoise 0.5099 



Shetland pony. . 0.7850 Nureddin 0.8602 Shetland pony. . 0.5289 



1 QUIRING, D. P., "A Comparison of Certain Gland, Organ, and Body Weights 

 in Some African Ungulates and the African Elephant," Western Reserve Uni- 

 versity, and Cleveland Clinic Foundation, Growth, Vol. 2, No. 4, pp. 335-346, 

 1938. QUIRING, D. P., "The Scale of Being," to be published in Growth, Vol. 5, 

 No. 3, 1941. 



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