CHAPTER III THE RATE OF GROWTH

form, in some few other creatures³⁸. It is obvious that there lies herein an endless field for the mathôÙeôÙmatôÙiôÙcal study of correlation and of variability, but with this aspect of the case we cannot deal.

In the accompanying table, I shew, from some of Vierordtãs data, the relative weights, at various ages, compared with the weight at birth, of the entire body, of the brain, heart and liver; {89} and also the percentage relation which each of these organs bears, at the several ages, to the weight of the whole body.

Weight of Various Organs, compared with the Total Weight of the Human Body (male). ( After Vierordt, Anatom. Tabellen, pp. 38, 39. )
	Weight of bodyã	Relative weights of	Percentage weights compared with total body-weights
Age	in kg.	Body	Brain	Heart	Liver	Body	Brain	Heart	Liver
0	3ôñ1	1ããã	1ããã	1ããã	1ããã	100	12ôñ29	0ôñ76	4ôñ57
1	9ôñ0	2ôñ90	2ôñ48	1ôñ75	2ôñ35	100	10ôñ50	0ôñ46	3ôñ70
2	11ôñ0	3ôñ55	2ôñ69	2ôñ20	3ôñ02	100	9ôñ32	0ôñ47	3ôñ89
3	12ôñ5	4ôñ03	2ôñ91	2ôñ75	3ôñ42	100	8ôñ86	0ôñ52	3ôñ88
4	14ôñ0	4ôñ52	3ôñ49	3ôñ14	4ôñ15	100	9ôñ50	0ôñ53	4ôñ20
5	15ôñ9	5ôñ13	3ôñ32	3ôñ43	3ôñ80	100	7ôñ94	0ôñ51	3ôñ39
6	17ôñ8	5ôñ74	3ôñ57	3ôñ60	4ôñ34	100	7ôñ63	0ôñ48	3ôñ45
7	19ôñ7	6ôñ35	3ôñ54	3ôñ95	4ôñ86	100	6ôñ84	0ôñ47	3ôñ49
8	21ôñ6	6ôñ97	3ôñ62	4ôñ02	4ôñ59	100	6ôñ38	0ôñ44	3ôñ01
9	23ôñ5	7ôñ58	3ôñ74	4ôñ59	4ôñ95	100	6ôñ06	0ôñ46	2ôñ99
10	25ôñ2	8ôñ13	3ôñ70	5ôñ41	5ôñ90	100	5ôñ59	0ôñ51	3ôñ32
11	27ôñ0	8ôñ71	3ôñ57	5ôñ97	6ôñ14	100	5ôñ04	0ôñ52	3ôñ22
12	29ôñ0	9ôñ35	3ôñ78	(4ôñ13)	6ôñ21	100	4ôñ88	(0ôñ34)	3ôñ03
13	33ôñ1	10ôñ68	3ôñ90	6ôñ95	7ôñ31	100	4ôñ49	0ôñ50	3ôñ13
14	37ôñ1	11ôñ97	3ôñ38	9ôñ16	8ôñ39	100	3ôñ47	0ôñ58	3ôñ20
15	41ôñ2	13ôñ29	3ôñ91	8ôñ45	9ôñ22	100	3ôñ62	0ôñ48	3ôñ17
16	45ôñ9	14ôñ81	3ôñ77	9ôñ76	9ôñ45	100	3ôñ16	0ôñ51	2ôñ95
17	49ôñ7	16ôñ03	3ôñ70	10ôñ63	10ôñ46	100	2ôñ84	0ôñ51	2ôñ98
18	53ôñ9	17ôñ39	3ôñ73	10ôñ33	10ôñ65	100	2ôñ64	0ôñ46	2ôñ80
19	57ôñ6	18ôñ58	3ôñ67	11ôñ42	11ôñ61	100	2ôñ43	0ôñ51	2ôñ86
20	59ôñ5	19ôñ19	3ôñ79	12ôñ94	11ôñ01	100	2ôñ43	0ôñ51	2ôñ62

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