Facts relating to the Great Lakes. 85 
not produced, as is commonly supposed, by the diminished -pres- 
sure of the atmosphere in elevated regions. Without doubt, dif- 
ferences in the electrical state of the air, will yet be found a fer- 
tile cause of various modifications in the working of the nervous 
system, but as we have thus far been unable to obtain any facts 
of this kind in respect to the cases now referred to, we must leave 
the question they suggest where we found it. 
It remains only to mention the individuals whose iindhineall and 
terest in meteorology has enabled us to present to the public 
the above tables. James Brant, Esq., English Consul at Erze- 
‘ room, furnished the records for that place for 1835, 6, 7, and 8, 
and for Trebizond for 1838 and 9; Rev. Messrs. E. E. Bliss and 
N. Benjamin, those for Drebisond for 1844 and 5; Rev. P. O. 
Powers those for Broosa for 1844 and 5; Rev. C. Haadin those 
for Bebek ; Rev. H. G. O. Dwight those for Pera; Rev. S. H. 
Calhoun those for Smyrna; Rev. J. F. Lanneau those for Jerusa- 
lem ; Dr. H. A. DeForest those for the other places in Syria; Rev. 
Thos. Laurie those for Mosul prior to April 4844; and Mrs. A. 
H. — and Miss F. Fiske those for Oormia. afias 
rw X—Fac relating to the Great Lakes ;* by Prof. C. Dewev. 
8 iit Phenomenon on Lake Ontario. 
be the September 20th, 1845, was witnessed a singular phenome- 
non on Lake Ontario. In the afternoon the waters suddenly mo- 
ved, in a mass, out of the rivers, bays, coves, harbors, &§¢., low- 
ering the water to different depths in different places. In ten or 
twelve minutes the waters returned, and rose to a higher level 
than they had before. This oscillation or efflux and reflux of 
the waters was repeated several times at about the same interval 
of eight to twelve minutes. At the mouth of the Genesee river, 
Seven miles from this city, the water fell two feet below its com- 
mon level, and soon rose as much above it. ‘The Revenue Cut- 
ter, John Y. Mason, lay in the harbor, and the hands witnessed 
fall and rise of the waters. At several places along the neigh- 
boring shores, boats were left for.a few moments on the sande. 
a Oswego, seventy miles east of this, a large body of logs mov- 
mos ted the Report of er Regents ne esas a of New 
age Pn i See all by the author. 
