,1879,] 
AMERICAN AGRICULTURIST. 
173 
THE EYE-PIECE is shown 
above in section. (It is seen in 
place at K on'.the opposite page.) 
The use of this is to magnify 
the image formed by the lower, 
or object glasses. In low- 
priced instruments this is 
usually a glass fastened in at 
the end of the body of the Mi¬ 
croscope, but in this instru¬ 
ment we have a regular sepa¬ 
rate eye-piece, as furnished 
with the most costly Micro¬ 
scopes. As shown in section, 
we have first the lower, or 
THE MICROSCOPE 
AS USED WITH THE 
CAMERA LUCIDA. 
A most interesting and valuable attachment to 
this new microscope, enabling any one to 
throw upon paper a greatly magnified Image of 
objects too small even to be seen by the unaided eye, 
and to make accurate sketches or pictures of the ob¬ 
jects in very large size, for permanent preservation. 
A most important feature of this New Microscope is 
the newly devised Camera Lucida Eye-piece Attach¬ 
ment. This accomplishes in a very simple bnt effective 
manner, what has previously required most costly ar- 
Tangements, that have been chiefly used only with very 
-expensive microscopes. This Camera Lucida is atone 
<fully worth all the cost of the microscope and the entire 
-apparatus. For example, place in the microscope a small 
hit of the end of the leg of a fly, or of the antenna or 
feeler of a bee or other insect, or any other minute object 
'barely visible to the unaided eye. It will be magnified 
SO to 100 or more diameters (or many thousands of sur¬ 
faces). With the Camera Lucida, the magnified image is 
clearly seen upon the paper, so that one can with a pen¬ 
cil, trace it accurately in large size, in all its parts, its 
hairs, markings—in short, produce permanently upon 
paper, for preservation and exhibition, an accurate sketch 
■of the wonderful developments which the microscope 
"reveals to the eye.—The application of this Microscope 
has a very wide range. With the Draw-tube and Eye¬ 
piece closed in, and by removing the lower Ohje.ct-glass, 
the power can he reduced to So diameters, so as to exam¬ 
ine the whole of a small insect at one view; while by 
putting on all the power (100 to 150 diameters), the foot 
of a fly, for example, will be expanded to cover the whole 
field of vision. Full explanations for using Microscope, 
Camera Lucida, preparing specimens, etc., etc., with 
general instruction, accompany each instrument. 
Field-glass , Q, which receives the image formed inside of 
the body by the Object Glasses. Above this is a Dia¬ 
phragm of blackened metal, P, to cut off all unnecessary 
rays, and give a more distinct image, which finally falls 
upon the eye-glass , O, and that transmits the greatly en¬ 
larged image to the eye. Both glasses are mounted in 
frames and attached by removable screws. This eye¬ 
piece is 2 inches long, and, with the Draw-Tube,, adds 
over 5 inches to the length of the body, when desired. 
Walnut Case (8x5x4 inches) constructed to hold the 
closed Microscope firmly in carrying it, and preserve it 
from dust and injury when not in use. It has recepta¬ 
cle for slides, and other accessories, for specimens, etc. 
containing a great variety of Items , including many 
good Hints and Suggestions which we throw into smaller 
type and condensed form , for want of room elseivhere. 
Clubs can at any time be increased by remitting for 
each addition, the price paid by the original members: 
or a small club maybe made a larger one at reduced rates, 
thus: One having sent 6 subscribers and $7, may after¬ 
wards send 4 names more and $3, making 10 subscribers 
for $ 10.00; and so for the various other club rates. 
Bound Copies of volume 37, and of every pre¬ 
vious volume back to Yol. XVI. (1857), neatly bound, with 
gilt backs, Index, etc., are supplied at $2 each (or $9.30 
if to be sent by mail). See Publishers’ Notes,2d cover page. 
Tlte German Edition.—All the principal arti¬ 
cles and engravings that appear in the American Agricul¬ 
turist are reproduced in the German edition. Besides 
these, there is a special department, edited by an eminent 
German cultivator. Our friends can do us a good service 
by calling the attention of their German neighbors and 
friends to the fact that they can have the paper in their 
own language, and those who employ Germans will 
find this Journal a most useful and acceptable present. 
Read the Adverllsing Columns.— 
Letters are daily received by the editors, asking where 
pigs, fowls, seeds, fertilizers, machinery, etc., can be 
procured. We consider all the information of this kind 
that is given in the advertising pages sufficient, if those 
needing anything will only look there; and can not find 
room to repeat what is already plainly told elsewhere. 
Every page of the American Agriculturist , including the 
covers, is interesting reading, and should all be carefully 
examined every month. In addition to looking after what 
one may want, the reading of what others have to say,'in 
offering their wares, etc., starts up some new idea in the 
mind of the reader.—When writing to any advertiser, al¬ 
ways tell him in what paper his advertisement was seen. 
The Australian Exhibition is to open at 
Sydney, in August next, and will be largely, of course. 
Agricultural, though other departments will be amply 
provided for. Special buildings have been erected in 
Prince Alfred Park, and every facility will be afforded to 
exhibitors. Our Makers of Agricultural machines and 
similar wares should make use of this opportunity to pre¬ 
sent their wares to the enterprising farmers of the 
colony, and we hope that American industry will be 
largely represented at this exhibition not only because 
we think it will he profitable, but in some measure 
to show our appreciation of the most interesting contri¬ 
butions made by the Australians to our Centennial. 
The American Poinologieal Society.—Just 
as last month’s paper was going to press we were in¬ 
formed that this Society had been invited to hold its 
next session in New York City. Knowing that the sub¬ 
ject of meeting here had been discussed, we supposed 
the information to be correct, and made the announce¬ 
ment. We too late learned that this was an error. The 
Society will not meet in New York, and we can not at 
the moment of closing our pages say where the meeting 
will be held. Probably the condition of its President, 
Colonel Wilder, the severe accident to whom is else¬ 
where noticed, may influence the selection of the locality. 
Basket Willows.— “ J. S.,” Brady's Bend, Pa. 
Basket willows may be grown upon any good farm land, 
from cuttings about a foot long. We would not advise 
you to undertake their culture unless you are sure of a 
market. The basket makers are nearly all foreigners, 
and such is their prejudice against stock grown in this 
country, that it would be very difficult for yon to dis¬ 
pose of your product in the New York market. 
The New York Bench Show of 1879.- 
Thc Annual Bench Show of Dogs has become a regular 
institution in this country, and the third one held in New 
York, on the 8th to 11th of April, was, by far, the most in¬ 
teresting and popular of the series. There was an un¬ 
fortunate oversight in not having gentlemen of urbane 
manners, with a little less hauteur and not on the small- 
beer order, to encourage and facilitate the labors of those 
who, by pen and pencil, endeavor to encourage and de¬ 
velop such shows by directing to and fixing public atten¬ 
tion upon them. Barring the general complaints on this 
point, which will doubtless he obviated another year, 
everything passed off successfully and pleasantly. We 
have selected for an engraving for our first page a few ol 
the most popular among the dogs exhibited, and those 
which may he taken as types of their classes. The dog 
on the upper left hand corner is “ Sefton,” a beautiful 
The Camera Lucida, is a most interesting and valuable attachment. For example : Take a bit of 
clean glass, breathe upon it to dampen it; then simply touch it with the wiug of a Butterfly or Moth. A 
bit of fine dust hardly visible to the unaided eye will adhere to the glass at some point. Place this point 
•on the Stage of the Microscope, and a mass of beautiful feather-like scales from an inch to three inches 
in length will he seen, with comb-like ends and various markings. These will be alike for the same 
species, but of the thousands of different butterflies and moths, these feather-scales will be as different in 
form, colors, marking, etc., for each species, as are the feathers of different kinds of birds. Apply the 
Camera Lucida, and the feathers will be thrown upon paper in their true form and color, and may then 
■be easily traced and sketched with a pencil, and even colored, if desired. We have drawings of such 
■feather-scales from wings of butterflies, three or four inches long and two inches or more wide, made 
with this new Microscope, from the dust on the wings of the insects, which was scarcely visible upon the 
■bit of glass. There is an unlimited field for the application of this Microscope and the Camera Lucida. 
