490 HALBERT L. DUNN 
c. General volumetric formula: Y = 0.01 [(aX)® + cl. 
d. Specific volumetric formula: 
a’. Cerebellum volume: Y = 0.01 [(0.095 X)4:9 
+ 20.0]. 
4. Compound growth: 
a. General volumetric formula: Y = (aX) + ce. 
b. Specific volumetric formulae: 
a’. Encephalon volume: Y = (0.125 X)?-16 + 1.5. 
b’. Brain and spinal cord volume: 
Y = (0.114 X)3-4 + 2.0. 
c’. Encephalon weight by literature: 
Y=" (O13) Xe e ieeal0: 
(In all of the above formulae, Y is the volume or length of the 
part under consideration (in em. or eec.), X is the crown-heel or 
total length of the body in em., and a, 6, and ¢ are empirically 
determined constants.) 
BIBLIOGRAPHY 
ARNOVLJEVIC, S. 1884 Das Alter, die Gréssen und die Gewichtsbestimmungen 
der Fétalorgane beim menschlichen Fétus. Diss., Miinchen. 
Biscuorr, E. 1863 Hinige Gewichts und Trockenbestimmung der Organe dese 
menschlichen Kérpers. Zeitschr. f. rationelle Med., III Reihe, Bd. 20. 
Biscuorr, T. L.W. 1880 Das Hirngewicht des Menschen. Bonn. 
Boyp, R. 1861 Tables of the weights of the human body and internal organs 
in the sane and insane at various ages, arranged from 2614 post-mor- 
tem examinations. Phil. Trans. Roy. Soc. London, vol. 151, pt. 1, 
pp. 241-252. 
Branpt, EH. 1886 Das Alter, die Gréssen und Gewichtsbestimmungen der 
Foetalorgane beim menschlichen Foetus. Diss., Miinchen, 30 pp. 
Bucustas. H. 1884 (Material on the question of the weight and volume of the 
brain.) (Russian Diss. St. Petersburg.) 
Cauxins, L.A. 1921 The growth of the external dimensions of the human body 
in the fetal period and its expression by empirical formulae. Report 
of meeting of Am. Assoc. of Anat., Mar. 24-26, 1921. 
DANIELBEKOFF, A. 1885 Data on the weight and the volume of the brain 
and the spinal cord in children of both sexes under one year of age. 
(Russian.) Diss., St. Petersburg, 24 and II pp. 
Dunn, H. L. 1921 The growth of the brain and the spinal cord in the human 
fetus and its expression by empirical formulae. Anat. Rec., vol. 
21, p. 55 (Abstract). 
Gigse, 1898 Diss., St. Petersburg. (Quoted from Gundobin; Die Besonder- 
heiten des Kindesalters, pp. 481 et seq.) 
