94 
THE YOUNG SCIENTIST. 
THE 
YOUNG SCIENTIST. 
PUBLISHED MONTHLY. 
Tekms — Fifty Cents per year. Postage free to 
all parts of the United States and Canada, except New 
York City . Our absurd postal laws make the charge for 
delivering our journal to subscribers in New York city 
five times as great as that required for transporting it 
across the continent, and delivering it to subscribers 
in San Francisco or New Orleans. We are therefore 
compelled to charge our New York subscribers 12 cents 
extra. 
The Young Scientist has been received with so much 
favor that its circulation is already greater than that of 
any other monthly Scientific or Mechanical journal pub- 
lished in the city of New York, with the exception of the 
Popular Science. Monthly. It goes into the best fam- 
ilies, and has their confidence. No olap-teap advek- 
TISEMENTS, OR ADVERTISEMENTS OF PATENT MEDICINES 
BKCEIVED AT ANY PRICE. 
Advertising Rates— 30 cenu per line, nonpariel 
measure. 
All Communications should be addressed to 
THE YOUNG SCIENTIST, 
P. O. Box 4875. 176 Broadway, New York. 
4®- For Club Rates, etc., see Prospectus. 
Our Trial Trip. 
TN offering four numbers for a trial trip 
for 15 cents, our object is to give to 
tboae who are interested an opportunity to 
examine the journal more fully than can be 
done by the inspection of a single number. 
Our rule is to send the four numbers at 
once, and the numbers that are sent vary 
from month to month, being always the last 
four that have been issued. 
As it is inconvenient to keep book ac- 
counts of these small transactions, those 
who remit the remainder of the yearly sub- 
scription are requested to state what num- 
bers have been previously sent. 
Contributions for the Young Scientist. 
llTE have been offered lately, by title, 
^ ' quite a large number of articles for 
this journal, many of which, if as good as 
their authors think they could make them, 
would be quite acceptable to our readers. 
Others, however, are of such a character as 
would not tend to advance the aims we have 
in view. To save trouble and unnecessary 
correspondence, we would say to those who . 
think that they can furnish something of 
interest to our readers, that the only way to 
obtain a decision is to send on the articles 
themselves. 
It is much more easy to say what we do 
not want than to describe an acceptable arti- 
cle. We do not want mere literary articles; 
even historical articles are out of place. 
All essays on the beauties and value of 
science go at once to the waste basket. 
What we want is practical articles, telling 
how to do something. If you have made 
some useful article by a new method, or of 
new materials; if you have devised some 
new process or wrinkle, or some new way of 
doing an old one, send us an account of it, 
and it will no doubt be acceptable. But we 
must see it before we can decide, and to 
receive our attention at all, the article must 
be thoroughly practical. 
1 • ♦ • 
To Our Exchangers. 
YERY many of our exchangers seem to 
overlook the conditions upon which 
exchanges are inserted. As the space now 
occupied is nearly as much as we can afford, 
we have determined hereafter to limit the 
exchange department to a column and a 
half; new exchanges will be placed at the 
beginning, and the old ones will be dropped 
as fast as they are crowded off at the other 
end. All exchanges will be limited to thirty 
words, and all attempts at buying and sell- 
ing will be rigorously excluded. 
Fourth of July Pistols. 
THE love of firearms which exists in the 
minds of most boys is undoubtedly 
an inherited remnant of that instinct which 
leads most savage races to be hunters. Al- 
most every boy is born a hunter. Set a 
wild animal, such as a rabbit or a wood- 
chuck, before a crowd of school boys, and 
see how they will go for it! This instinct 
leads the boy to clamor for a gun or a pistol 
as soon as he has donned his first pair of 
pants. Unfortunately his request is gener- 
