1893.] Scientific News. 595 
Drs. E. A. Andrews, Johns Hopkins University; Howard Ayers, of 
the Allis Lake Laboratory; Professors W. G. Farlow, Harvard Uni- 
versity ; William Libbey, Jr., Princeton College; J. M. Macfarlane, 
University of Pennsylvania; C. S. Minot, Harvard Medical School ; 
E. S. Morse, Salem ; H. F. Osborn, Columbia College ; John A. Ryder, 
University of Pennsylvania; W. T. Sedgwick, Mass. Institute of Tech- 
nology; E. B. Wilson, Columbia College. 
The Laboratory is located on the coast at Woods Holl, Massachu- 
setts, near the Laboratories of the United States Fish Commission. 
The building consists of two stories, and has 33 private laboratories for 
investigators and 5 general laboratories—two for beginners in investi- 
gation in Zoology, one for teachers and students receiving instruction 
in Zoology, one for Botany, and one for Physiology. The Laboratory 
has aquaria supplied with running sea water, boats, a steam launch, 
collecting apparatus and dredges; it is also supplied with reagents, 
glassware and a limited number of microtomes and microscopes. No 
aleohol can be supplied beyond what is required for work in the labora- 
tory. 
> the munificence of friends, the library will be provided not only 
with the ordinary text-books and works of reference, but also with the 
more important journals of zoology and botany, some of them in com- 
plete series. 
THE LABORATORIES FOR INVESTIGATORS 
will be open from June 1 to August 30. They will be equipped with 
aquaria, glassware, reagents, etc., but microscopes will not be provided. 
In this department there are 33 private laboratories for the exclusive 
use of investigators. ; 
Those who are prepared to begin original work under the guidance 
of instructors, will occupy tables in the general Laboratories for Inves- 
tigators, paying for the privilege a fee of fifty dollars. The number of 
such tables is limited to 20. ; > 
An Elementary Course in vertebrate embryology will be introduced 
this season, designed to meet the needs of those who have completed 
the general courses in the Students’ Laboratory. The study will be 
confined mainly to the fish egg, as the best type for elucidating verte- 
brate development. Each member of the class will be supplied with 
material, and be expected to work out each step in the development 
from the moment of fecundation. The aim will be not only to master 
the details of development, but also to acquire a thorough knowledge 
of the methods of work. Methods of preparing surface views, imbed- 
