IV CONTENTS. 
Page. 
XVII.’ Internal Improvements of the State of Pennsylvania ; 
No. II.; by Epwarp Mitter, Civil Engineer, 
XVIII. Notice of some new Electrical Instruments; invented 
by Cuartes G. Pace, - - - - - 
XIX. Communications; by Davip Tuomas. 1. Some ac- 
count of the Chrysomela vitivora, (with an engray- 
ing.) 2. Remarks on the specific character of Cory- 
dalis formosa and Corydalis canadensis, - - 
XX. Notice of a Double Fish; by Svz. Cuurcuitt, 
XXI. On the sexual characters of the Naiades; by JarEp 
P. Kirtianp, M. D. - - - 
XXII. On the Sea and Land Rates of Chronometers; by 
Parkinson & Fropsuam, = - - - 
XXII. Necrology of Count Chaptal; translated and communi- 
cated by Dr. Lewis Feuchtwanger,  - 
XXIV. On the Elements of the Solar System; by E. iL Bur- 
RITT, A. M. - - 5 - 
XXV. Observations on the Meteors of November13th, 1833; 
by Prof. OtusTep, - - - - 
MISCELLANIES—FOREIGN AND DOMESTIC. 
British and American Journals of Science,  - - 
CHEMISTRY, &C. 
1. Rapid sketch of the present state of Electricity, - 
2. Electro-magnetic experiments, - - 
3. 4. On the ioment bodies of J. J. Berzelius. ‘separkell in the © 
freezing of water by ether, - = 
AGRICULTURE, DOMESTIC ECONOMY, &C. 
1. On a new theory of the action of manures, and of their em- 
ployment; by M. de la Giraudieu, = - - 
2. New observations upon the action of the sulphate of lime, 
3. Memoir upon valuable kinds of fruit trees, and their prop- 
agation from seed, —- - - - 
4, Easy method of giving greater strength and firmness to 
thread, network, cordage and coarse cloth, - 
5. Use of diablotins, or crackers of fulminating powder, 
6. 7. 8. 9. 10. Cheap mode by which farmers and others may 
manufacture charcoal.—A tried recipe for burns.— 
To remove a hard coating or crust from glass and 
porcelain vessels.—Scotch method of preserving 
eggs.—Preservation of skins, - - 
108 
110 
113 
116 
117 
121 
127 
129 
132 
174 
175 
177 
178 
183 
186 
187 
188 
