two sets were mingled together) all belonged to the two other species:
hence we may feel almost sure that these islands possess their
respective species of these two sub-groups. In land-shells this law of
distribution does not appear to hold good. In my very small collection
of insects, Mr. Waterhouse remarks, that of those which were ticketed
with their locality, not one was common to any two of the islands.
If we now turn to the Flora, we shall find the aboriginal plants of the
different islands wonderfully different. I give all the following
results on the high authority of my friend Dr. J. Hooker. I may
premise that I indiscriminately collected everything in flower on the
different islands, and fortunately kept my collections separate. Too
much confidence, however, must not be placed in the proportional
results, as the small collections brought home by some other
naturalists though in some respects confirming the results, plainly
show that much remains to be done in the botany of this group: the
Leguminosae, moreover, has as yet been only approximately worked out:--
----------------------------------------------------------------
Number of
Species
confined
to the
Number of Number of Galapagos
species species Number Archipelago
Total found in confined confined but found
Name Number other to the to the on more
of of parts of Galapagos one than the
Island Species the world Archipelago island one island
----------------------------------------------------------------
James 71 33 38 30 8
Albemarle 46 18 26 22 4
Chatham 32 16 16 12 4
Charles 68 39 29 21 8
(or 29, if
the probably
imported
plants be
subtracted.)
----------------------------------------------------------------
372