148 
THE YOUNG SCIENTIST. 
Unmounted objects ready to mount, including 
diatoms, spicules, sections, foraminifera, poly- 
cystina, starches, insects, algae, zoophytes, etc., 
for other mounted or unmounted objects. 8. N. 
Hardy, Victoria, Cass Co., Neb. 
Bird's eggs wanted. Have in exchange old U. 
S. coins and other articles. Address E. W. Hum- 
phreys, Woodstown, N. J. 
Wanted, Scott's revised list of all postage stamps 
and stamped envelopes, cost two dollars and a 
half ; for sixteen numbers Magazine of Art, cost 
four dollars ; or books. E. H. Jenkins, Rockland, 
Mass. 
Wanted, good illustrated works on entomology 
and ornithology ; also specimens of natural his- 
tory, and curiosities for a collection ; stuffed birds 
given in exchange. Geo. C. Jones, Brookfield 
Center, Fairfield Co., Connecticut. 
A number of magic lantern slides wanted ; state 
what is wanted in exchange ; will give a good 
trade. Samuel J. Jones, Box 137, Oxford, N. G. 
Wanted, good telescope, 2 to 3>2 inch aperture ; 
state what is wanted in exchange. Edward B. 
Porter, Indiana National Bank, Indianapolis. 
Wanted, a good wood lathe, or eneyclopeedia, or 
othergood books and tools; in exchange for a 
Bickford Knitting Machine complete; make of- 
fers- F. M. Snyder, West Dryden, Tomp. Co. N. 
Back numbers of Young Scientist for 1878, a 
telegraph instrument worth $10, and two books on 
phonography, (Mrs. Burn's Text-Book and a 
reader), worth $1.50, in exchange for geological 
specimens, scientific books, or offers. Robt. E. 
Stackpole, 2 Varick Place, N. Y. City. 
Practical inrt"uction in Takigrafy, or Linds- 
ley's Phonetic Short-Hand, will be given in ox- 
change for good books ; a microscope, or guitar 
worth from $5 to $10. Takigrafer, Box 150, New 
Haven, Oswego Co.. New York. 
$22.00 telescope, orchestra B- flat cornet. 5 crooks, 
and box, Fleetwood scroll saw with boring at- 
tachment and 2 doz. saws, cost $26; exchange for 
printing press and type. Manager W. U. Tel. of- 
fice, Lanesboro, Susqa. Co.. Pa. 
Send to W. S. Beekman, 2 Fountain PL, Roxbury, 
Mass., for minerals and chemicals ; state what you 
have for exchange ; books, microscopes, chemi- 
cals and electrical apparatus wanted. 
What offers for Household microscope, darning 
machine, new 7 shot revolver and box of car- 
tridges, small gold watch, violin and case. J. H. 
Bell, Tarboro, Edgecombe Co., N. C. 
A magic lantern with eight slides, original price 
$6, to exchange for a gun. telescope, good fishing 
rod, or revolver. John H. Boies, Box 246, Hudson, 
Mich. 
Wanted, scientific books and instruments; 
rilease send list and what you want for them. W. 
A. Brooks, Jr., P. O. Box 122, Salem, Mass. 
To exchange, a reven shot Smith ^ Wesson 
revolver, 22-100 calibre, in good condition ; state 
what is offered in exchange. W. B. Flausburgh, 
La Fargeville, N. Y. 
To exchange, a house swing, cost $3, in good 
order, for a hammock. Henry M. HaViland, 103 
Park PL, Brooklyn, N. Y. 
Wanted, a magic lantern good enough for public 
exhibition : state wh;it is wanted in exchange. 
G. W, Kessler, Altoona, Pa. 
A horizontal slide valve steam engine and tubu- 
lar boiler, cylinder l^4x2)2in., with pump and 
heater all complete, ready to set up and run ; 
worth $25; for type and accessories for job print- 
ing, or offers. Geo. L. Lamson, La Fargeville, N. Y. 
Wanted, good nickle rim banjo; have barber 
chair to give in exo-hanae. C. H Lockwood, South 
Westerlo, Albany Co., New York. 
To exchange, a collection of about 125 rare 
minerals, each encased in uniform box, accurately 
labeled, classified and numbered, for telegraph, 
sounder, battery, &c., complete, model engine, 
microscope or offers. Jos. G. Kitchell, 345 Race St., 
Cincinnati, O. 
For anything relating to drawing or penman- 
ship, will exchange a new book on fortune telling, 
and a treatise on chiromancy ; 1,750 engravings ; 
price $2. W. C. Gamble, Bothwell, Ontario, Canada. 
Wanted, works on natural sciences, phrenology, 
or physiology, loose or bound numbers of month- 
lies on science or health, etc., small printing press 
or microscope ; for books or lessons in shorthand. 
H. C. Lucas, Macomb, 111. 
A good philosophy, 393 pp., will exchange for 
"American Agriculturist," microscope or book on 
microscopy. J. Y. Mohler, Middlesex, Cumb. 
Co., Pa. 
A rifle (range 60 rods), gold watch and violin;, 
your choice ; a galvanic battery preferred in ex- 
change. Jas. M. Ovensliire, Barrington, N. Y. 
Wanted, to exchange all the numbers of " The 
Cincinnati Artisan," for the year 1879, and three 
beautiful scroll saw designs, for a small but good 
dark lantern (bull's eye). E. E. Pinkerton, Alton, 
Union Co., Iowa. 
To exchange for other things, one hundred theo- 
logical (evangelical) and miscellaneous books. E. 
J. Rich, Brookfield, Mass. 
AYanted, a floor-board planer in exchange for 
scientific books, microscope or micro-spectro- 
scope, etc. Henry A. Sprague, Charlotte, Maine. 
Wanted, to exchange two telephones, a B-flat 
cornet, an aquarium with fountain attachments, 
for a pair of telegraphs and keys. W. C. Vick, 
East Ave,. Rochester, N. Y. 
For exchange, two Excelsior, No. 2, printing 
presses ; state offers. W. A. Wilcox, Tunkhan- 
nock; Pa. 
A book, " Fret Sawing for Pleasure and Profit,'" 
by H. T. Williams, cost 50 ets., in exchange for a 
book of sawing patterns, or offers of similar value. 
S.B. Wilson, Lenoir, N. C. 
PUBLISHER'S DEPARTMENT. 
Amateur Printing-.— Although the art of 
printing, in its higher departments, is one of the 
most difficult and exacting, nothing is easier than 
to turn out passable work, and this, too, with 
presses which at first sight would seem to be in- 
capable of such results. With the small printing- 
presses which are now so numerous in market, it 
is quite possible to turn out cards, labels, and 
work of that kind quite as good as the ordinary 
work of the jol) printer. And it is not difficult tO' 
learn how to do it Amateur printing is perhaps 
one of the most fascinating and useful of the 
many pursuits to which young people devote 
themselves. And it is a wonderful educator. 
Nothing teaches a boy how to spell and punctuate 
like the printing press. In addition to all which 
it is a profitable amusement, for we have known 
many boys who keep themselves liberally sup- 
plied with pocket money by means of their little 
printing presses. Those who desire to set up an 
amateur printing office would do well to send to 
John Metz, 32 Beekman St., N. Y., for a copy of his 
catalogue, and if they are in town it would be ad- 
visible for them to examine his stock. 
