292 GROWTH OF PARTS AND ORGANS 



Weight of both suprarenals {male) = 



O.O000855 {Bd. wt. + 3) + 0.0113 log {Bd. wt + 3) - 0.0093 (37) 



Formula (37) is also used for the female up to 30 gms. in body- 

 weight, then 



Weight of both suprarenals [female) = 



0.00023 Bd. wt. + 0.00388 log {Bd. ivt.) - 0.002 (38) 



[Bd. wt. > 30] 



Formulas (37) and (38) were used for table 146 in accordance 

 with the restrictions indicated. 



Weight of Thyroid on Body Weight (Hatai, '13) 



Weight of thyroid {sexes combined) = 



0.0000973 {Bd.wt. +27) +0.0139 log {Bd. wt. -]- 27) -0.0226 (39) 

 Formula (39) was used for table 146. 



Weight of Nitrogen on Body Weight (Hatai, '05) 



To determine the amount of nitrogen eliminated by the rat 

 during twenty-four hours at different body weights, 



2.33+(3xiogBd.wt.) 2.33 + (3 X log Bd. wt.) (40) 



iV = 10 * orlog N = ^ 



4 



where N = total nitrogen in milligrams and Bd. wt. = body 

 weight in grams. 



Formula (40) is based on the data in table 99. 



GROUP I. ALBINOS 

 second division: formulas based on age 

 Body Weight on Age From 10-365 Days, Hatai (ms '14) 



The formulas (41) (42) (43) (44) apply only the series of data 

 published by Donaldson, Dunn and Watson, ('06). 



