Aquatic Lite on 
it was only a short time later that a cake 
about three by eight was cut and ‘“‘shoved 
under.” Now the question was, did we 
make a strike. Our cheesecloth nets 
were soon making their circuitous jour- 
ney through the water, creating a current 
which was the means of drawing the 
bugs owing to their lack of power of re- 
Ambassis lala 
sistance. After a few strokes the nets 
were withdrawn, and, anxiously peering 
into them, we joyously shouted “they’re 
here.” The operation was repeated again 
and again, the nets always showing a 
yellowish mass of nice clean Corethra. 
When we were about ready to leave, a 
happy couple who had followed us from 
our home, appeared at the top of the 
bank with a camera. For those fish fans 
who have never experienced the invigor- 
ating sport of “bugging in winter,” a 
photograph is reproduced herewith to 
show how it 1s done. 
—_—_~.>_____ 
The Origin of Salt Water 
Some twenty years ago Prof. Edward 
Hull, in a lecture to the members of the 
\ictoria Institute, London, explained 
that throughout all geological time the 
ocean had been receiving continual sup- 
plies from rivers bringing down not only 
sediments, but salts and carbonates, to 
gether with free silica, in solution. 
The sediment was deposited over the 
ocean floor, and generally not far from 
the lands, while the dissolved ingredi- 
ents were carried by the currents into all 
parts. 
Meanwhile the ocean surface was con- 
stantly giving off, particularly over the 
equatorial regions, enormous quantities 
of vapor, which were carried into the 
higher regions of the atmosphere and 
were precipitated in the form of rain and 
snow over the lands. Part, of course, fell 
on the sea again, but the greater quan- 
tity fell on the land surfaces, and was 
returned to the ocean in streams charged 
with fresh salts and carbonates. 
The consequence of that process must 
clearly be that the saline ingredients had 
been increasing in the oceanic waters 
from the earliest periods down to the 
present dav. 
ue oa 
The eggs of the native frogs are laid 
in large jelly-like masses; those of the 
toad in a long string. 
East Asia 
Rasbora maculata 
When filling an aquarium place a 
glass tumbler on the bottom and pour the 
water into it. After the water reaches 
the level of the top of the tumbler, the 
current will be deflected upward, and 
there will be no disturbance of the sand. 
