50 
THE YOUNG SCIENTIST. 
THE 
YOUNG SCIENTIST. 
PUBLISHED MONTHLY. 
Tebms — Fifty Cents per year. >e®=- Postage free to 
all parts of the United States and Canada, except New 
York City . Our absurd postal laws mate 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 Scientific or Mechanical journal published in 
the city of New York, with the exception of the Scientific 
American, and the Popular Scienct Monthly. It goes 
into the best families, and has their confidence. No 
OLAP-TBAP ADVERTISEMENTS, OB ADVEBTISEMENTS OF 
PATENT MEDICINES BEOEIVED AT ANT PBIOE. 
Advebtisinq Rates — 30 cents per line, nonpariel 
measure. 
All Communications should be addressed to 
THE YOUNG SCIENTIST, 
P. O. Box 4876. 176 Broadway, New York. 
JtSf For Club Bates, etc., see Pbospectus. 
The Trial Trip. 
TTTITH this issue the trial trip of many 
^ ^ of our subscribers comes to an end, 
and of course we shall assume that those 
who fail to remit do not want the journal. 
To those who desire to continue with us, we 
would say that on receipt of the balance of 
the year's subscription — 35 cents — their 
names will be entered for the year 1878. 
We believe that we have kept the journal 
up to the standard of our promises, both as 
to matter and as to illustrations. Although 
we distinctly stated that we did not intend 
to make the Young Scientist a mere pic- 
ture book, it has contained as fine illustra- 
tions as any journal of its class, and some 
that are far finer and more valuable than 
those which have appeared during the same 
period in much more pretentious and ex- 
pensive periodicals. These illustrations 
have not been old electrotypes, purchased 
for a trifle, but new wood-cuts prepared ex- 
pressly for our columns. 
Of late we have had so much valuable 
matter on hand, that we have given four 
extra pages each month. Our readers will 
please remember that we do not promise 
this all the time. 
The writers of almost all the letters that 
we receive say, " If you can keep your jour- 
nal up to the standard of the number that I 
have seen, I will be a constant subscriber. " 
In reply we would only ask our readers to 
examine our record. No. 2 was certainly an 
improvement on No. 1; No. 3 was better 
than No. 2; the present issue is equal to any 
that has gone before it, and we have in 
preparation material that will make the 
journal better and better as it grows older* 
But to make the journal all that we would 
like it to be, we must have a large subscrip- 
tion list — at least thirty thousand — and we 
hope our young friends will use their best 
efforts to bring this about. Let each one 
remember that every additional subscrip- 
tion enables us to give a better journal to 
those who have already subscribed. 
That our success, thus far, is all that we 
could have desired, is evident from the fact 
that, although but four months old, we 
already have a larger circulation than any 
other scientific or mechanical journal pub- 
lished in this city with the exception of the 
Scientific American and the Popular Science 
Monthly. 
The Right to Make Patented Articles. 
TO those who comply with its provisions, 
the patent law of the United States 
secures the exclusive right to make, use and 
VEND any invention to which they can pro- 
perly lay claim. And no person, not legally 
authorized so to do, can perform any one of 
these acts without laying himself liable to 
an action at law. Great doubt and con- 
fusion of ideas seem to exist upon this 
subject in the minds of many of our ama- 
teur mechanics and scientists, and even one 
of our mechanical monthlies, which makes 
great pretensions to being an authority upon 
all subjects, actually told its readers some 
time ago that any one had a right to make 
a patented article for Ms own use! It is un- 
necessary to say that this was an error, but 
