Friday, November 25, 2016

HISTORIC LETTER DATED MARCH 9, 1859

"Observatory, Washington, March 9, 1859 -




My occupation admit only of a short reply to your letter of the 2nd instant.


In the spring of the year , the N.E. trades do frequently cross over into the Southern hemisphere.




The intamescence ? so to speak, of the ascending air and vapor in the Equatorial calm belt extends over many miles on either side of the rising of place? Hence the Equatorial cloud ring is much broader than the Equatorial calm belt.? is in 3 degrees South Pagta ? nearly on the same meridian is in 5 degrees S. The latter is in a rainless region. the former has its regular rainy season. The cloud ring overshadows the one at certain seasons, but never the other.




We account for the tropical rains exterior to the calm belt by local peculiarities, such  as monsoons, mountain ranges etc. The windward side of the mountain is the rainy side. Off the Pacific Coast of Central America there is a S.S. Monsoon When the N.E. Trades blow, the Carribean slopes of Costa Rica have the rainy side and the Pacific the dry, but when the monsoons of the Pacific commence the N.E. Trades are hushed and the dry and wet seasons are reversed.


Periodical rains do not fall across the whole Trade Wind belt, except between certain meridians or on this continent and elsewhere when there are monsoons.as just explained or mountains as the Andes of South America. The Red Seal lies between  rainless meridians.




In the Strait of Florida the warm waters of the Gulf Stream reach to a depth of 3,000 feet. Off the Grand Banks they do not extend to a depth of 1,000 feet. The Gulf Stream gets rid of its heat by dispersing it at the top to air and vapor. The surface of the Gulf Stream lies very nearly on a dead level. Therefore get Professor Chadborne to explain how all the Golf Stream water which in the Straits of Florida lies below the level of 1,000 feet deep. manages to get above that level by the time it reaches the Grand Banks.


Respectfully,


Walter Wells, Esq.
New Sharon, Maine


N.B. I found this document in an antique shop many, many moons ago in Booth Bay Harbor region of Maine.. about 1975. I paid $10 for it. I think the content is superb.


Respectfully,


ROBERT LOUIS POTVIN
Chief Blogger and Historian
West Brookfield, Massachusetts















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