until seven years later (1869) that this complete sketch of his travels
"from the point of view of the philosophic naturalist" appeared.

Between 1862 and 1867 he wrote a number of articles which were published
in various journals and magazines, and he read some important papers
before the Linnean, Entomological, and other learned Societies. These
included several on physical and zoological geography; six on questions
of anthropology; and five or six dealing with special applications of
Natural Selection. As these papers "discussed matters of considerable
interest and novelty," such a summary of them may be given as will serve
to indicate their value to natural science.

The first of them, read before the Zoological Society in January, 1863,
gave some detailed information about his collection of birds brought
from Buru. In this he showed that the island was originally one of the
Moluccan group, as every bird found there which was not widely
distributed was either identical with or closely allied to Moluccan
species, while none had special affinities with Celebes. It was clear,
then, that this island formed the most westerly outlier of the Moluccan
group.

The next paper of importance, read before the same Society in November
(1863), was on the birds of the chain of islands extending from Lombok
to the great island of Timor. This included a list of 186 species of
birds, of which twenty-nine were altogether new. A special feature of
the paper was that it enabled him to mark out precisely the boundary
line between the Indian and Australian zoological regions, and to trace
the derivation of the rather peculiar fauna of these islands, partly
from Australia and partly from the Moluccas, but with a strong recent
migration of Javanese species due to the very narrow straits separating