all ready, we will proceed to set the 

 glass. 



Put plenty of cement all around the 

 frame of one side, after which set a side 

 glass, pressing firmly, but very gently 

 against the cement. After trimming 

 away the cement which you have 

 squeezed out, proceed to put the cement 

 on the second side, then the one end, 

 after which the other end, and finally 

 the bottom. Now put a corner of cement 

 all around the inside. Brace the sides 

 and ends with sticks of wood and allow 

 to set for two or three days. Next, turn 

 the aquarium bottom side up and fill 

 the space between the glass and upper 

 frame with cement. If your work has 

 been well done, your aquarium will be 

 water-tight and should remain so for 

 many years. A good plan is to give the 

 corners on the inside a coat of spar 

 varnish before applying the cement as 

 it helps to stick the cement better to the 

 glass. In this procedure, leave the 

 varnish dry for about twelve hours 

 before putting on the cement, so that 

 the varnish will be sticky. 



(To 1)6 continued.) 



Tlie third iirticle will be on the equipment of the 

 iKiujirium with sand, plants, etc. 



A Cure for Gill Trouble. 



HAKRY P. PETERS, Philadelphia. 



'T^WO years ago I had gill trouble 

 -■- among my goldfish, and as a result, 

 lost thousands of young. Toward the 

 end of the season, a scientific friend 

 advised me to try the copper solution 

 for a remedy. I did, and with pro- 

 nounced success. I wanted to try it 

 out more thoroughly last year, but did 

 not have a single case. I submit the 

 formula, hoping that it may be further 

 proved efficient, and the results of the 

 experiments published in The Aquarium. 

 Before this time, no cure for the 

 disease has been known, and as gill 

 trouble kills a hundred times more 

 young goldfish than all other ailments 



combined, it would be a tremendous 

 saving to breeders to be able to hold it 

 in check. 



Copper is dangerous to the life of 

 fishes and plants, hence care should be 

 exercised not to make the solution too 

 strong, nor to allow the fish to remain 

 in it too long. It will probably be 

 necessary to kill a few fish with an over- 

 dose in order to arrive at the proper 

 strength, but as the fish are sure to die 

 if not treated, there is everything to 

 gain and nothing to lose by experiment- 

 ation. Make a stock solution by dis- 

 solving 120 grains of sulphate of copper 

 in a pint of water. For use, take a 

 tablespoonful of the stock solution to 

 a quart of water. Put the fry in the 

 diluted solution, allowing them to 

 remain fifteen minutes to several hours. 

 Return the fish to clean, fresh water 

 and note results. 



Observe! 



Someone chided Socrates for looking 

 at the ground as he walked. For answer 

 the great man pointed to a field of grain 

 and observed, "Some of those stalks 

 droop, others stand upright." Yes, 

 but — ?" "Well, those that droop have 

 grain in them!" The story has come 

 down to us. Socrates lives. The name 

 of the man who rebuked him is 

 forgotten. 



The man who walks with head in the 

 clouds does not see the useful things 

 lying about his feet. And it is these 

 close-to-hand things that he must weave 

 into the warp and woof of his fabric if 

 he would make the mantle of success. 



Exchange. 



A laboratory of natural history is a 

 sanctuary where nothing profane should 

 be tolerated. I feel less agony at 

 improprieties in churches than in a 

 scientific laboratory. — Lowis Agassiz. 



