To Teachers and Parents.
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ELEMENTS OF NATURAL PHILosoPa.s


embracing the general principles of Mech tas


Hydrostatcs, Hydraulics, PneumatIcs, Acor


tics, Optics, Electricity, Galvanisrn MI gneli i,-


and Astronomy. Illustrated by sever al hunIs.. a..


Engravings BY LEONARD D. GALE, NJ. D. III. r%


fessor of Geology and Mineralogy IN the NV, vm


versity of the City of NewYork, and Lee.e..' Gu..


on Chemistry and Natural Philosophy fs.nH ~


full bound, 80 cents; 81 so dozen TO leacas s.,s
The above WORK extoasively introduced IN the es S,,
and ssminares different parts Of the unsa Dr.
Gale being himself practical Chemist and his d rect
duties Lecturer requiring him 70 make cons
ed experiments all branches OF Natural Mos
emiaently qualified for the task Of editing such pb,r
the other publications the popu lar oTahchs he bcos
ply and Chemistry compilations hi1'S hen q,
makers; hence the requeht iallures oi eonts
tempts experiments while following the RE uss
in these works. No such difficulty Will occur IL A'
this work of DR.. Gale. ,,a sddrsssa
" Orders mu ST be accompanied bv the cas aS York


TO GREELEY McELRAih'-'" -'"


r Sargcnt's Life of Clay for SAFE s, al Postage
Thirty copies for ST. hundred copies o' in wr
any part OF the United States only csnes. eooo
pers ready tor mailing as above fnce iof AiHs d
csrrs. ,--.. :,
~ The yVhIG Almanac, f0r ..GrIsas
obtained from GU. Agents. b. STEEL Co. 90
and WILLIAM b. MOORE y 20. Clncienati
dozen. n.ls
r- TIE TRIBuSg--Persons wishing the New rrnu o..
or Weekly Tbune, will leave their names al e
fce SO Dock ST. Phila be regularly served fcf "
dences. Terms l2s cents pr week for DAILY, anu "
Weekly