366 Severity of Cold at Plattshurgh, ' 



List of organic remains and accompanying rocks, contained 

 in a box forwarded to Professor Silliman by Edward 

 Hitchcock. 



No. 1. Pudding stone iperhsLTps grauwacke slate, obtained 

 from the bottom of Connecticut river, Whitmore's Ferry, 

 Sunderland, Mass. 



2. Slate lyinw immediately above No. 1, commencing at 

 the surface of the river and extending upwards of ten feet, 

 containing one species of fish. 



3. Same rock containing another species offish, 



4. Same xook, fish impressions, tioo fish lying across each 

 other. 



5. Fish impressions, same slate rock. 



6. Fish impressions. 



7. Organic remains in same slate. 



8. do. do. do. 



9. Specimen of a reddish slate two hundred feet above 

 the fish. 



10. do. brown slate three hundred feet above the 

 fish. 



11. do. do. do. do. with 

 a vegetable or animal relic penetrating the specimens. 



12. Vegetable remains on the same general formation. 



13. Slate three hundred feet above the fish containing a 

 dam shell. 



More particular information will be found in the labels. 



10. Severity of cold at Plattsburgh* on Lake Champlain, 



, Extract of a letter to the Editor, dated March 17, 1821, from Dr. Lyman 

 Foot, surgeon in the United States Army. 



It is now snow^ing violently and has been snowing for 

 thirty six hours ; the inhabitants here call it the " equinox- 

 ial storm." The weather has been very cold at this place, 

 during the last winter. The lake Champlain is now passa- 

 ble on the ice in every direction ; I have seen ice cut out of 

 the lake this winter, which I should judge to be three feet 

 thick. The thermometer on the 25th of January last, at 

 Reveillee stood 23° below 0. Notwithstanding the intense 

 cold here, we do not suffer so much as you would naturally 



* Lat. 44° 42' N. 



