WATERPROOF 
Cement Tanks with 
Ordinary cement contains alkali which dis- 
solves in the water and will injure the fish. 
IMPERVITE is an Integral Waterproofing 
Compound of a bituminous nature, manufactured 
in sea-green, tile red and other tints. Its action 
is to seal up the alkalies of the cement and also 
to prevent the water from penetrating it. The 
accompanying letter bears testimony to this fact: 
ill 
IMPERVIT 
il i 
MN 
THE STANDARD PAINT Co, 
100 William St., New York City 
Gentlemen:—Obtaining unsatisfactory results from a number of 
preparations for waterproofing cement, an architect induced me 
to try IMPERVITE. The results have been all that could be 
desired and have successfully withstood the test of time. In 
concrete acquarium and pool construction I recommend your 
product on all occasions, 
The addition of IMPERVITE to the cement at the time it 
is mixed not only renders the pool watert.ght but also eliminates 
the danger of having chemicals from the fresh cement wash into 
the water and kill the fish. 
Yours very truly (Signed) WM. T. INNES, JR. 
President of Aquarium Society of Philadelphia 
August 29, 1912 
Our booklet, ‘Integral Waterproofing for Cement Tanks”’ sent on request 
Tue STANDARD PainT Company, 100 William St., New York City 
AQUARIUM 
SPECIALTY Co. 
1827-31 WASHINGTON AVE. 
NEW YORK CITY 
MAKERS OF THE 
Rogers Crystal Aerator and Filter 
LARGEST MANUFACTURERS OF 
Aquaria, Terraria, Vivaria and Aquatic 
Cages, Mouse and Frog Houses 
BREEDERS OF : 
Japanese and Chinese  Fringetail 
Telescopes and of Red, African 
and Japanese Snails 
CULTIVATORS OF 
Sagittaria Natans and Gigantica and 
of Single-rooted Ludwigia Mullertti 
Correspondence solicited 
The Guide to Nature 
Published Monthly by 
The Agassiz Association 
ARCADIA, SOUND BEACH, CONNECTICUT 
SINGLE COPY, toc 
ONE YEAR, $1.00 
Frequently has interesting articles devoted to Aquaria, 
and is always packed full of interesting, beautifully illus 
trated material pertaining to all departments of nature. 
Milwaukee Trypod Co., 457 Eleventh St., Milwaukee, Wis. 
Manufacturers of and dealers in all kinds of aquariums 
Importers and dealers in high-grade gold and wild fishes 
Z Fa a aS 
em MM STOLE CLD AOC AEE A 
a ea 
: CERRAREIRERAIE S| 
THE IDEAL TROPICAL AQUARIUM 
DON’T LOSE YOUR FISH 
this winter through cold. Safeguard your choice pets 
with an ‘‘Ideal’’ Tropical Aquarium. 7he only dropical 
aquarium in existence. Write for special proposition, 
THERE IS ONLY ONE AQUARIUM PUMP 
on the market. This is It. For over 20 years the ‘‘K.1).A.”’ has been 
universally recognized to be unrivalled. Don’t be misled with cheap 
makeshifts. Ifinterested ina Real Aquarium Pump write me today 
for circular, 
TROPICAL 
FISH 
I have them 
all at reduced prices. Ask 
for descriptive literature. 
W. L. BRIND, F.Z.S. 
AQUARIST = 
554 West 185th Street, New York 
THE K.D.A. 
AQUARIUM 
Imported 
Goldfish 
Aquarium Plants 
of all kinds 
Aquaria Tanks 
Fish Globes 
Ornaments, Etc. 
Auburndale Goldfish Co. 
(Not Incorporated) 
920 West Randolph St., Chicago, IIl. 
Send for Catalog and Trade Prices 
