IV CONTENTS. 



Page. 



Xni. Calstroiibarite, a new Mineral Species ; by Prof. Chas. 



Upham Shepard, 161 



XIV. New Magnetic Electrical Machine of great power, with 



two parallel horse-shoe magnets, and two straight ro- 

 tating armatures, affording each, in an entire revolution, 

 a constant current in the same direction ; by Chas. G. 

 Page, M. D. 163 



XV. On the Dry Rot ; by Phinehas Rainey, - - 169 

 XVI. Additional Observations on the Shooting Stars of August 



9th and 10th, 1837 ; by Edward C. Herrick, - - 180 



MISCELLANIES. —DOMESTIC AND FOREIGN. 



Geologij. 



1. Renwict's Outlines of Geology, - - - - - 183 

 3. Geological Reports, - - . - _ . . jg5 



3. Fossil Fishes, ----.... igg 



4, 5, 6. Fossil Fishes in Virginia — Analysis of the scales of 

 the fossil Gavial of Caen, in Normandy — Interesting Fossils 

 found in Louisiana, -----_. 201 



7, .8. Sienitic Granite, near Christiana, Norway — New locality 

 of Tourmaline, 204 



General Physics and Chemistry. 



1. Notice of a splendid Aurora of 1789, - . _ _ 204 



2. Transmission of Galvanic light through metals of different 



conducting pow^ers, -____.. 205 



3. On a new pyrogenic acid, ---_.. 206 



4. 5. On the non-existence of a compound of Platinum and Hy- 



drogen — Sixth satellite of Saturn, _ . _ _ 207 



6. Meteorological Register for 1836, kept at Montreal, Lower 



Canada, 208 



7, 8. Oil of the Tutui or Candle Nut Tree— Aerolites, - - 209 

 9. New Magnetical discoveries, ------ 210 



Bibliography. 



1. This Journal, 211 



2, 3. Prof. Agassiz' great work on Fossil Fishes — Prof. Agassiz 



on the Echinodermata, ---.._ 212 



4. Statistical Tables of Massachusetts, ... - 213 



