2 
4 Advertising Sheet of the 
Cistern with Gas-holder, improved from the best English, Lamp 
Stands with improved Shifting Rings, Spirit Lamps with Glass Caps, 
Furnaces of various sizes, Oxygen Retorts of Iron with tubes, tight 
joints. without luting, Pyrometers, Porcelain Mortars, and Evapora- 
ting Dishes, Nooth’s Apparatus, Bell Sai Alembics, tubulated 
and plain Retorts, Glass Tubes, &c. 
pricaL.—Lenses, Mirrors, oS ai "Models of the human Eye, 
Single and Compound ‘Micros scopes, Telescopic Kaleidoscope, Phan- 
tasmagoria Lanterns, imported by J. M. W. and warranted superior 
to any other, with EON rau of sliders on Astronomy, Natura 
History, Ancient and ostume, View &e. 
AsTRONOMY, Ceeckon sen Pe alae —Orreries, Telluri- 
ans, Globes 18, 12, 10, and 6 inches diameter, Clinometers for tak- 
Rain Gauges, Barometers and Thermometer rs. 
notro-Maenetism.—A very great variety of Apparatus and 
Machines for Motion, Shocks, and Sparks, ie; cakes this inter- 
esting branch of science. 
Gaxvanrsm.—Batteries, improved construction of different sizes. 
J. M. W. would refer to his Catalogue for further information, 
copies of which will be sent per mail on application. All letters 
post pard. 
Sets of Apparatus for the various departments of science, are put 
up for Schools, Academies, Colleges, &c. at all prices. Respecting 
the quality of the apparatus manufactured by J. M. W., he has the 
pleasure of referring to the Editors of the f ier of Science, and 
also to the following awards from 2 Fairs of the Mass. vec 
ech. Association held in Boston. SruvEer Mepat, 1837. GOLD 
oe — eS Mepat, 1839. 
ston, Bice, i, 
Pro e. Hitchcock's Final Report on the Geology of 
ie Massachusetts. 
Published by J. H. BUTLER, Norruamrron, Mass. 
Apams, 229 Broadway ; in Philadelphia, by the Booxsencers. 
Tae work is in two quarto volumes, and contains more than 800 
pages of letter press, one Geological Map of the State, one Map 
ome ‘the strike and dip of the strata, the axes of elevation and 
depression, the systems o} ce the course of the diluvial fur- 
rows, and of the veins and beds of ore in Massachusetts ; also more 
bei fifty Bere of are size, and nearly three hundréd Wood 
mn printed beyond the number required by 
the Iegiure. ann “aa 
ing the idchadtion and direction of strata, Reflecting Goniometer,| 
For sale in Bone, by Lirrie & Brown ; in N. York, by Josian 
