Miscellanies. 157 
The Committee appointed on the communication of Dr. John Locke 
of Cincinnati, read at the last meeting, [consisting of Messrs. Peter S. 
Du Ponceau, R. M. Patterson, and J. Saxton,] made the following report, 
Mach was adopted. 
“The Committee to whom was referred the communication of Prof. 
John Locke of Cincinnati, report, that it gives the details of a series of 
experiments, made for the purpose of determining the magnetic intensity 
and dip for certain positions in Ohio. For these experiments he had fur- 
nished himself in London with the best apparatus, and had vibrated there 
two needles of the form recommended by Hansteen, and one in the form 
of a small flat bar. Five months afterwards, namely, on the 17th of Jan- 
uary, 1838, he again vibrated these needles at Cincinnati, and found the 
ratio of horizontal intensity at the former place to that at the latter, as fol- 
lows: by needle No. 1, as 1 to 1.1624; by needle No. 2, as I to 1.1639; 
by No. 8, as 1 to 1.2037. Of these results the author prefers the last ; in- 
asmuch as the magnetism of needles is liable to decrease, but not to in- 
Crease 
= On the 20th of August, 1837, he made experiments with his dipping 
needle, to determine the dip at Westbourn Green, near London, the mean 
of which gives 69° 23'.3. 
“On'the 26th of ‘November, 1837, the mean of a series of experiments 
made at Cincinnatsys in lat. 39° 6 N., and long. 84° 27 W., gave the dip 
=7 45% 
“At Dayton, Ohio, in lat. 39° 44’ N., and long. 84° 11’ W., the dip 
was found to be 71° 22'.75, on the 26th of March, 1838. 
dip was found on the 29th of March, 1838, to be 71° 27’ 375. 
“ At Urbana, lat. 40° 03’ N., long. 83° 44’ W., March 30, 1838, the. ’ 
dip was found = 71° 29.94. 
*“ At Columbus, the seat of government of — aye a 57’ N., long.” 
83° W., April 3, 1838, the dip was found = 71° 
- The i interest of this paper is much increased = ene Sheena that 
no accurate experiments on the intensity and dip of the needle have here- 
tofore been made in the United States, west of the Alleghany mountains. 
_. “The Committee conclude their report, by recommending that Prof 
Z Locke’ s communication be printed in the Society’s Transactions.” 
1g * The claims of Dr. Henry Hall Sherwood to remarkable discoweries i in 
Magnetism were discussed: both his postulates and his deductions were 
considered erroneous. [For his claims, see this Journal, 34: 210.] 
Dr. Bache announced the death of Charles Maurice Talleyrand, Prince 
of Benevento, a member of the Society, who died on the 17th of May, 
1888, aged 83 es 
dismal. 1838.—On motion of Dr. Patterson, a Committee was ap- 
Pointed to observe the eclipse of the Sun of the 18th of September next. 
Committee, Dr. Patterson, Mr. Walker, Mr. Paine, and Capt. Talcott. 
iy 
” 
a 
* At Springfield, Ohio, in lat. 39° 53 N., anid ‘long. 83° 46’ W., the - 
ns 
<.. e 
