vi - CONTENTS. 
Pag 
Triarthrus, proposed in the Monograph of the Trilobites 
of North America; by Prof. Jacosn Green, M. D., 341 
XIX. Remarks on the Barometer, with a table of Meteorologi- 
cal Observations, made on board of the U.S. Ship 
Peacock, from July 8th, to August 17th, 1837, during a 
passage from Peru to the United States, by way of 
Cape Horn, maported ae W. S. W. RuscHensBer- 
GER, M. D., 345 
XX. Further proof of an aaa Meiosis ag in Aigcats 
with remarks on Shooting Stars in cenerers By Ep- 
waRD C. Herrick, - 354 
XXI. o a large and very sensible Thermoscopie oon 
er; by Prof. Joun Locxe, M. D., 365 
XXII. ata on a Hurricane which cou over Stow, 
in Ohio, October 20th, 1837; by Prof. Ex1as Loomis, 368 
XXIII. Rotary Multiplier, or Astatic Solvenonmians " by Cuas. 
G. Paces, M. D., - : oc 376 
MISCELLANIES.——-DOMESTIC AND FOREIGN. 
1. On the Meteoric Shower of November, 1837, - - 379 
2. Extraordinary case of electrical excitement, with ane 
remarks by the Editor, 
3. Impressions of feet in rocks, : - -. , 398 
4. New locality of alias with other minetals sdetails - 399 
5. Caoutchouc, - < - “ - - 400 
6. On Meteoric iiasivaat in Asie - - - 401 
7, 8. Brilliant Meteor seen in the ~~ rine Synopsis of of the 
family of Naiades,  - 
9. Temperature of Lake Chiari - “ilifees - - 403 
10. Encrinite, Tufa, &c,  - - : is < e A 405 
11. Description of a new Trilobi 406 
12. Difference between the English porcelain wll shat of eis 
many and of the continent, 407 
13. Mathematical, philosophical, and chespleal instruments, 408 
