ZOOLOGICAL 
SECTIONAL VIEW OF THE LENS CABINET. 
ranged. The plans for this exhibition cabinet, 
which are entirely our own, may be of interest 
and the details are given herewith. A four- 
compartment case was constructed, each com- 
partment measuring two feet broad by two feet 
high by one and one-half feet in depth (front 
to back). In the front of each is a sliding door 
in which is set a window for the transparent 
explanatory sign. This door can be lifted to 
permit the attendant to arrange the specimens 
in the exhibit. The lens set in the lower sta- 
tionary part of the front, is a five-inch reading 
glass with a magnification of about two to three 
diameters. 
A small aquarium jar is placed within the 
compartment in such a position that the animals 
in it will be in proper focus. The jar which 
we have found best suited for our purpose is a 
straight sided, all-glass aquarium about twelve 
by twelve by four inches. If the aquarium is 
too small it will not hold sufficient water to keep 
the inmates alive and in good condition for very 
long, while too large a jar will allow free-moy- 
ing animals to get out of focus readily. 
On the back wall of the compartment is placed 
an electric light with a reflector. This throws 
the light upon the specimens and at the same 
time illuminates the transparent information 
ecard above. The inside of the compartment is 
painted white to reflect as much light as possi- 
ble. Each compartment is lighted separately 
so that if one is temporarily empty the lens and 
sign are not illuminated. 
The compartments are open above and in the 
SOCIETY 
BULLETIN. 43D 
bottom behind the aquarium jars is a coarse wire 
screen which permits a free circulation of air 
behind the jars to prevent them from becoming 
too highly heated by the lights. 
The transparent label is placed high enough 
above the lens so that while one person is view- 
ing the specimen those behind can read the ac- 
count of it. The whole cabinet is mounted on 
legs and set against the wall and so takes up 
but little space. A shelf a foot wide projects 
forward below the lenses, serving to prevent 
people from pressing against the glass. 
In this way we have been able to exhibit the 
following in the short time since the cabinet 
was completed. 
Mosquito larvae and adults; hydroids—Pen- 
naria and Tubularia; sea anemones—Sagartia, 
ete.; Star Coral, Astrangia; Shrimp, Crangon 
vulgaris; small jellyfishes, and comb jellies; 
Bryozoa,—Bugla and Amathia; Horseshoe crab, 
young; small crustacea~—Gammarus, ete. 
RCO! 
THE OLD MAN OF THE SEA. 
HE literature of mythology is full of refer- 
ences to aquatic monsters, usually part hu- 
man and part fish, and practically all primi- 
tive peoples have believed or still believe in some 
of these marine creatures of the imagination. 
They have often been worshipped as deities but 
more often feared as demons or as omens of 
THE OLD MAN OF THE SEA. 
