PALEONTOLOGY.

Before giving the outline of the plan for the general geologic survey, it
will be better to explain the accessory plans and organizations. There are
in the Survey, as at present organized, the following paleontologic
laboratories:

1. A laboratory of vertebrate paleontology for formations other than the
Quaternary. In connection with this laboratory there is a corps of
paleontologists. Professor O.C. Marsh is in charge.

2. There is a laboratory of invertebrate paleontology of Quaternary age,
with a corps of paleontologists, Mr. Wm. H. Dall being in charge.

3. There is a laboratory of invertebrate paleontology of Cenozoic and
Mesozoic age, with a corps of paleontologists. Dr. C.A. White is in
charge.

4. There is a laboratory of invertebrate paleontology of Paleozoic age,
with a corps of paleontologists. Mr. C.D. Walcott is in charge.

5. There is a laboratory of fossil botany, with a corps of paleobotanists,
Mr. Lester F. Ward being in charge.

The paleontologists and paleobotanists connected with the laboratories
above described, study and discuss in reports the fossils collected by the
general geologists in the field. They also supplement the work of the
field geologists by making special collections in important districts and
at critical horizons; but the paleontologists are not held responsible for