CONTENTS. y 



Page, 

 ricana — Tables for determining' the latitude, at sea — Sci- 

 ence in the West, --__-__ \qj 

 18. Science in the South, - - 188 



OTHER NOTICES AND COMMUNICATIONS. 



1. Reniarks on the American locust, - - - - - 188 



2. Notice of a halo, 189 



3. On the supposed collapse of steam boilers, and the means of 



preventing explosions, -_--__ 190 



4. Hurricane of August, 1831, ------ i9i 



5. Agriculture and Horticulture in the West, - - - 193 

 G, 7. Population of Philadelphia — Temperance, - - - 194 



8. Notice of cobalt, nickel, &c, - 195 



9. Manufacture of lead pots, &c. ------ 196 



10,11. Skulls — Notices of scenery, &c. in Pennsylvania, - 197 



12. Singular phenomenon, ------- igg 



Four Cardinal Points in Stratiographical Geology, established 

 by Organic Remains; by Prof. A. Eaton, - - _ 199 



NUMBER II. 



Art. I. Memoir of the Life of Eli Whitney, Esq. inventor of the 



Cotton Gin ; by Prof. D. Olmsted, - - - . 20I 

 II. Reminiscences of the late Mr. Whitney,- by the Edi- 

 tor, 25& 



III. Description of the Rotascope ; by Prof. Walter R. John- 



son, 26& 



IV. Investigation of the Epicycloid; by E. F. Johnson, 280 

 V. On Sugar from Potatoe Starch ; by S. Guthrie, - r;^ 284 



VI. Remarks on various Chemical Preparations; by S. Guth- 

 rie, 288= 



VII. On double refraction in the molecules of bodies; by 



David Brewster, LL. D. F. R. S. L. & E. - - - 29& 

 VIII. Experimental Inquiries respecting Heat and Vapor, with 

 some practical applications ; by Prof. Walter R. John- 

 son, 304 



IX. To describe an Hyperbola; by Rowland G. Hazard, 314 

 X. Supposed Agency of Galvanism in transferring Colors 



through animal substances ; by Dr. Alexander Jones, 316 

 XI. An account of the Sapphire and other minerals in New- 

 ton township, Sussex county. New Jersey;, by Samuel 



Fowler, M. D. 319 



XII. A sketch of the Mineralogy and Geology of the Counties 

 of Orange (N. Y.) and Sussex (N. J.); by Charles U. 

 Shefard, Lecturer on Botany in Yale College, - - 321 

 XIV. On Central Forces ; by Prof Theodore Strong, - 334 



