DOVE MARINE LABORATORY, CULLERCOATS. 
system is that even small inhabitants of the tanks may be screened 
so as to prevent them escaping, and if screens be not put in, and 
they escape into the open drain, they may be easily recaptured and 
restored. Another is that there are no drainage pipes within the 
building liable to be choked up. 
The private aquarium possesess 38 small tanks and a concrete 
table, both supplied with salt water. There has since the opening 
been installed a complete set of paddles in the tanks, worked by a 
tip-bucket ; and two of the tanks from the old laboratory have been 
used in connexion therewith to form an experimental hatching 
apparatus, the fry being led by a trough to any of the six series of 
shallow tanks. The additions were made by means of a grant 
from the Board of Agriculture and Fisheries. 
The tanks in the private aquarium may therefore be used for 
studies in embryology, for experimental hatching and rearing, and 
for storing material for observation and description. The concrete 
table is drained next the wall, and is especially meant for experi- 
ments in glass vessels, &c. A tank for photography has been 
placed in a window recess, the window being so made that it can 
be opened completely. 
