1912] Ritter: The Marine Biological Station of San Diego 169 
of the building is the library (17 by 25 feet); while adjacent 
to it and opening from the corridor at the head of the stairs is 
an apparatus and glassware room (12 by 17 feet). 
The furniture of the investigators’ rooms is simple. It in- 
cludes a U-shaped table running across the north and half way 
down the east and west walls, two and a half feet wide and pro- 
vided in the middle with a chest of five drawers, and with one 
drawer on each wing. On the east and west walls are a set of 
book shelves, a large specimen ease, a cloak locker, and a ‘‘wood 
stone’’ table 2 feet 2 inches by 6 feet 3 inches adjacent to a sink, 
and a two-story aquarium on the south side. These rooms, in 
common with the rest of the building, are supplied with gas, 
fresh water, and electric lights. At present they are heated 
with stoves, although provision is made for gas grates. While 
thus simply equipped these rooms were planned to yield the 
greatest convenience and satisfaction as scientific workshops. 
The common difficulty in controlling, for microscopic purposes, 
the extreme variations in light intensity is overeome by the very 
simple device of admitting only north light to the microscope’s 
reflector through three large windows (2 feet 6 inches by 5 feet 
8 inches each). Again the usual awkward and troublesome man- 
ner of filing and caring for one’s working collections is, we 
believe, satisfactorily overcome by the construction and arrange- 
ment of the specimen cases. Similarly the salt-water aquarium 
is constructed and arranged to allow ease of observation and 
experimentation as well as illumination from all sides. 
The specimen case, constructed of well-seasoned Oregon pine, 
is 7 feet 3 inches high, 3 feet wide, and 2 feet deep. The 
insides of its lateral walls are provided with cleats and 
upon these cleats moveable shelves 1 inch thick are placed, the 
distance from one shelf to the next varying according to con- 
venience. Upon each shelf rest two trays 15 by 21 inches, in 
which the bottles of specimens are kept. This arrangement is 
advantageous from two points of view, (1) bottles of any size 
may be filed by merely readjusting the distance to the shelf 
above, and (2) in having two trays instead of one on each shelf, 
thereby making them lighter and easier to handle. The ease is 
rendered dust proof by a glazed hinged door, which is locked by 
