14 
THE ULTRA MICROSCOPE. 
It Detects Objects Whose Size or Shape 
Cannot Be Seen. 
It will come as news to most peo- 
ple that science has invented in- 
struments that go two degrees be- 
yond the most powerful microscope 
in detecting small objects. The 
first of these is known as the ultra 
violet microscope. ‘This takes ad- 
vantage of the fact that a photo- 
graphic plate can often see things 
that the human eye cannot, and for 
the following reason: 
Things cannot reflect light and 
consequently cannot be seen that 
are smaller than the smallest wave 
length of light that falls on them. 
Violet light is the smallest that can 
be possibly seen with the human 
eye. But there exists a much small- 
er wave length in the part of the 
spectrum not visible to the eye call- 
ed the ultra violet hght. This has 
the peculiar property of affecting a 
photographic plate just as any other 
light would, so that we get a true 
picture of the minute object that is 
under examination. 
Thus the deficiency of the eye is 
made up for by a mechanical inven- 
tion of the human brain. This ul- 
tra violet light, though not detecta- 
ble by the human eye, is easily seen 
by small animals and insects. It 
has been tried with great success on 
ants especially. With this ultra vio- 
let microscope the smallest objects 
that can be photographed with defi- 
niteness of dimensions are brought 
out with wonderful distinctness. 
But there is one other instrument 
that can detect much smaller ob- 
jects, though their shape or size can- 
not be seen, and that is known as 
the ultra microscope. This takes 
advantage of the fact. that a small 
object will scatter any light that 
falls on it. To make the meaning 
clear, all of us have noticed a beam 
of light entering a room full of 
floating dust particles. We see only 
the dust particles in the beam of 
light. The reason we see them is 
because each little particle scatters 
the light that falls on it in all di- 
rections, and some of the scattered 
light enters the eye. 
This is the principle on which the 
ultra microscope is based. . Light is 
made to fall on the object in such a 
way that none of the direct light 
can enter the eye. Then the parti- 
cles appear as small points of light. 
In this way it has been proved that 
the coloring in red glass is not dif- 
fused, but consists of thousands of 
little red particles close together.— 
St. Louis Renublie 
NORTH SHORE BREEZE, 
a 
Got a Prize. 
Wertheimer, a London art dealer, 
was one day passing through May- 
fair when he noticed a sale about to 
take place of the “furniture and 
household effects of a deceased no- 
bleman.” He walked through the 
rooms where dealers were critically 
examining choice specimens of un- 
doubtedly genuine Chippendale and 
Sheraton, interspersed among early 
Victorian furniture, his eyes ap- 
parently dwelling on nothing. But 
when the sale was about to begin he 
asked the auctioneer if he would 
take £5,000 ($25,000) for every- 
thing in the house. The offer was 
accepted. “Now you can resell 
everything for me,” said Mr. Wer- 
theimer, “except this,” and he took 
down from the mantelpiece a dirty 
ornament some nine inches high 
and put into his pocket. It was a 
piece of the rarest Dresden china, 
bearing the coveted mark of the 
wand of Aesculapius, which he aft- 
erward sold for $50,000. 
Dodged a Scolding. 
Ske—George, did you mail that 
letter I gave you last Monday morn- 
ing? 
He (cornered, but fertile in ex- 
pedients) — No, I didn’t. And, 
what’s more, I demand to know its 
contents! 
She (amazed) — Why, George, 
what’s the matter? 
He (inwardly delighted) — I’m 
jealous—that’s what’s the matter— 
madly, desperately, insanely jeal- 
ous! 
She—You dear old goose! It’s 
only a letter to Cousin Sue. 
He (apparently much relieved) — 
Is that all? How foolish of me! 
Pll go out and mail it at once.— 
Exchange. 
What Makes Electricity? 
Lots of other people would like to 
know what makes electricity, but 
nobody does know it. We know a 
good many things about electricity, 
just as we know a good many things 
about life. But we do not know 
what makes the difference between 
a dead tree and a live tree, although 
te know the difference perfectly. 
Just so we know it is dangerous to 
touch what we call a “live wire,” 
because electricity is passing 
through it, but we do not know 
what electricity is. We know how 
to make electricity do wonderful 
things for us, but we do not know 
what “makes electricity.” — St. 
Nicholas. 
ee ere st aed ot tee ile oo 
Printing 
Palle 
Anybody in business should 
make it a point to have only 
the best in printing. Every 
piece of advertising literature 
sent out acts as a silent sales- 
man, and on the appearance 
of this salesman depends the 
“Pulling Power.’’ The 
Breeze Print executes the 
kind of printing that gets 
business—and keeps tt. 
LETTER-HEADS, STATEMENTS, 
PACKET-HEADS, BILL-HEADS 
POST CARDS 
POSTERS, FLYERS, PLACARDS 
WINDOW CARDS 
BOOKS, CATALOGUES 
FOLDERS 
CALLING CARDS, ENVELOPES 
BALL ORDERS and TICKETS 
WEDDING STATIONERY 
The list covers a few of the many atfferent 
forms of printing we do. To designate all 
the different lines of letter-press work the 
office is capable would require too much space. 
The 
Breeze Print 
MANCHESTER, MASS. 
Telephone 137, Private Line 
ae 
