212 University of California Puhlications in Botanu [Vol. 6 



Narborough (80), 56, with Hood (79), 60. There is, however, no 

 closer affinity to Gardner than to Seymour, Barrington, Bindloe, and 

 Jervis. 



JAMES 



The nearness of this large island to Albemarle and Indefatigable 

 is clearly reflected in the figures : Albemarle (325), 169, Charles (319), 

 124, Chatham (306), 121, Indefatigable (193), 111. Again, Jervis 

 is only a few miles from James : the common species number twenty- 

 nine while Seymour, Barrington, Gardner, and Bindloe, all slightly 

 richer in species but more remote, share twenty-seven, twenty-two, 

 twenty-seven, and twenty-four forms with James. I must admit that 

 these differences are in themselves not very impressive; but my con- 

 tention is that absolute w^ealth of flora is the primary factor, and 

 geographical position only the chief of the secondary causes governing 

 distribution. 



INDEFATIGABLE 



This great but apparently either unusually arid or botanically 

 unduly neglected island of the central group shows somewhat the same 

 effects of location as James, though in less marked form as regards 

 the other large islands, no doubt owing to somewhat greater proximity 

 to both Charles and Chatham. For the five smaller islands the signi- 

 ficant figures are: Seymour thirty-eight, Barrington twenty-seven, 

 Gardner thirty, Bindloe twenty-seven, Jervis, thirty-two. Seymour 

 is almost on top of Indefatigable ; and Jervis, while as far removed as 

 Barrington, lies toward allied James, while with Barrington the more 

 alien southeastern group is approached. 



ABINGDON 



This, not the largest Imt the highest and by far the richest island 

 of the northern group, appears to have fairly uniform relations with 

 the other groups, as might be expected from its rather detached posi- 

 tion. There is, however, a perceptible leaning toward the nearer 

 western and central flora rather than toward the farther southeastern. 

 Compare Albemarle ninety-nine, Charles seventy-nine, Chatham eighty, 

 James eighty, Indefatigable seventy-five. As James and Indefatig- 

 able run to only two-thirds as many species as Charles and Chatham, 

 the practical equality of the present figures is certainly not accidental. 



