Do not mutilate this paper but order by 
number. 
The Naturalist ofiers the following ar- 
ticles as inducements to new subscriptions; 
We will mail all of Vol. TV. of The Nat- 
uralist for 50 cts., including your choice 
of any of the following interesting specimens, 
or the spticimens will be sent separately for 
30 cts., postage and packing, however, extra i;i 
e'.ther case. 
I The National Book Exchange, (R. B. 
Trouslot ci. Co., proprietors.) supplies its 
members with Books, Mvs'c. rerioclicals. 
Jewelry and Printing at Wholeaole prices. 
\ membership certificate, good for one year, 
permits its holder to order goods for himself 
and family at wholesale prices. This certificate 
is worth $1.00. Each person holding a mem- 
l)crship receives a mammoth book catalogue, 
giving wholesale prices of many thousands 
of books, and also a large catalogue listing 
thousands of sheet music, music books, etc., 
at retail prices, from which a discount of 50 
per cent is allowed; together with a whole- 
sale price list of printing and stationery. 
The Exchange also undertakes to supply its 
members, at wholesale prices, with any 
book or music published, not listed in their 
catalogues, when obtainable. 
This certificate is the most liberal premium 
ev'er offered by r.ny publi her, and one u e 
believe will be very generally selett^-d. For 
particulars address The NATURALIST. Pobt- 
age, packing, etc. 55 cts. 
2 A fine Barnacle from the Atlantic, 
a Shark's Egg and an 
Egg of the Skate. Postage, etc. 5 cts. 
3 A fine egg of tlie Hammerhead Shark, 
Zygcenra rnulleus, from the Pacific Ocean 
and a Sea Urchin, ccnimonly called Sand 
Dollar. Postage 4 its. 
4 Nest of the Trap Door Sjiider, being 
the home of the large and ugly Mijijale hen- 
tzii, from Lower California. A valuable 
addition to every collection. Postage and 
packing 6 cts. 
5 Ivory Ap]")le. This, is a fine large spec- 
imen of V'egetable Ivory, found la the South 
Sea Islends. It gets it:^ name Irom a close 
resemblance to a petriliei apple. Po-tage 
and packing 5 cts. 
6 Two fine specimens of Pesurectifm 
Plant, from j\Iex;co. This plant looks like 
a bunch of dead roots, vet, w hen placed in 
water, it s«'cl!s up and spreads out its arms 
into a lovely patch of green moss, several 
times its original size. One plant, post-paid 
15 cts. 
f Modern Indian Pottery. 
Made by the Indians 
of Arizona. Vases, 
Urns, Pitchers, Saucers, 
etc. All perfect. Our 
own selection, post-paid. 
*No. 8. Manfon s lliiiiil Book of Fiel'l Bota- 
ny. Postage eie. '2o els. 
*No. 9. Manton'.s Insects, TTow to ratoli and 
How to Prepare them tor ilio C aliiiiet. l"ost- 
age etc. 20 cts. 
♦No- 10. Taxidermy Without a T-acl.er. 
Postage etc. 211 cts. 
*No. 11. Beginnings wilh the Microscope. 
Postage etc. 20 CIS. 
*Thc above manuals ;ue all cloth bound 
and profusely illiis; ra 1 (mI. 
No. 12. Natnial History Plays, Dialogues, 
etc. Postage etc. 3 cts. 
No. l.S. Sea Fan, hi iug Eorgonia flabellum 
of the Flexible Coral family, fan shape, of a 
ricli yellow coloi-. Also a fine specimen of 
Red Coral, Coral Hum rubrum, Postage, pack- 
ins:, etc. 5 cts. 
No. 14. Pink Coral from Singapore. An ex- 
quisite specimen suitable for every cabinet. 
Postage and packings cts. 
No. 1.5 Book of Data Bl niks, bound in b'ds, 
check lidok toiin, snilnlil.' fir poekof, 
containini; 10 dalas w il h st nh, perforated so 
thatdatascan be torn fromstub. Postage 3c. 
N0.I6 Hoop(M''s Glass Eyes. An assortment 
of eyes, b(Jl li black and colored, from 0 to 17. 
Postage 4 els- 
No, 17, Oologist's Onttit. One good, white 
metal, blow ]iipi'; one btn lib's Steel drill for 
fresh eggs; set of trays. Postage etc, 6 cts. 
No. 18. Assol-tment Oologist's Ti'ays. Our 
trays are the sti-ongest on the market, being 
made expi'essly by our order. The corners 
are strengthened wilh a strong manilla 
wrapi«M-, ihe whole being covered witb a 
dark, non-soiling, olivegreVn wraisper. They 
are uniformly ?4 ot an inch deep, 
18 trays 2xlX worth ^.-jc. 12 trays 3x2 worth 20c 
6 " 4x3 " Lie. 4 " 6x4 " Inc 
3 " 8x6 " Sc. Packed, by express, 
for lOcts. extra. Think of it, 78cts. worth of 
trays with the Naturalist for only 60 cts., or 
the trays alone for 40 cts. 
No. 19. An assortment of 100 Insect Pins; 
Six sheets Pork, 3>;jxl2x,'^ inches. Postage 
and packing 5 cts. 
No. 20. Entomologist's Outfit. One Setting 
Block, 5)4 inches long, flat or beveled top, 
wide or narrow slot, with 100 as.soited Insect 
Pius. Postage and packing .5 els 
No. 21. Tidings from Nainre, no pages of 
this exeellent lii 1 le niagaziin\ ciotli bound, 
formerly imblishel by H. Jl. Downs, of lint- 
land, Vt. Postage etc. 5 cts. 
22. West Ainerifan Scientist. 12 continu- 
ous numbers of 1 his in t ei csl ing journal, for- 
merly published at $1.1 0. Postage etc. 6 cts. 
23. The Oologist, 13 continuous numbers of 
Lattm'sOologisI , published at &(' cts. Post- 
age 2 cts. 
24. The Iloosier Naturalist. Vol. 2. Aug. 
1886 to July 1;;87, botli inclusive; nearly 35n 
pages of interesting reading matter. Pos- 
tage 2 cts. 
2.5. Mother of I'enrl Siiell. These shells are 
eleganlly pdlisliedHiid make beautiful SIJCC- 
inii'iis as l ln'\' are; used e.viensively by art- 
ists for small landscapes. Postage etc. 25 c. 
