CHAPTER III THE RATE OF GROWTH

four series of experiments about 10, 20, 40 and 60 per cent. of the tail were severally removed. The amount regenerated in successive intervals of three days is shewn in our table. By plotting the actual amounts regenerated against these three-day intervals of time, we may interpolate values for the time taken to regenerate definite percentage amounts, 5 per cent., 10 per cent., etc. of the {148}

The Rate of Regenerative Growth in Tadpolesã Tails. ( After M. M. Ellis, J. Exp. Zool. VII, p. 421, 1909.)
Seriesã	Body length mm.	Tail length mm.	Amount removed mm.	Per cent. of tail removed	% amount regenerated in days
3	6	9	12	15	18	32
O	39ôñ575	25ôñ895	3ôñ2ã	12ôñ36	13	31	44	44	44	44	44
P	40ôñ21ã	26ôñ13ã	5ôñ28	20ôñ20	10	29	40	44	44	44	44
R	39ôñ86ã	25ôñ70ã	10ôñ4ã	40ôñ50	6	20	31	40	48	48	48
S	40ôñ34ã	26ôñ11ã	14ôñ8ã	56ôñ7ã	0	16	33	39	45	48	48

ã Each series gives the mean of 20 experiments.

A graph plotting percent removed against time in days for varying percentages of restoration from 5% to 45%.

amount removed; and

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