TABLE 3.

Number of unseen species

No. of additional clones analyzed	No. of expected new species	Increment in new speciesa
1,000	26.86	26.86
2,000	42.36	15.50
3,000	51.72	9.36
4,000	57.55	5.83
5,000	61.27	3.72
6,000	63.68	2.41
7,000	65.26	1.58
8,000	66.31	1.04
9,000	67.00	0.69
10,000	67.46	0.46
∞	68.41	0.95

^aNumber of species expected minus that in the row above.