48 ES. Holden—Transit of Mercury, 1881. 
so as to reproduce silence anew, and the distance of this mass 
from the exploring instrument gives the measure which it is 
desired to determine. 
I conclude this note by relating an experiment made in 
the office of Dr. Frank Hamilton, of New York, on the 7th of 
October, last, in the presence of thirteen eminent surgeons.* 
The experiment was made upon the person of Col. B. F. Clay- 
ton, wounded in 1862. The ball entered in front through the 
left clavicular articulation, breaking the clavicle. Drs. Swine- 
borne and Vanderpool supposed that it was lodged under the 
scapula, but my apparatus demonstrated on the contrary, that it 
was located in front and just below the third rib.—Comptes 
Rendus, Paris, Oct. 24, 1881, vol. xeiii, p. 625. 
Art. VI.— Observations of the Transit of Mercury, 1881, Novem- 
ber 7, at Mount Hamilton, California. (Communicated by the 
Lick Trustees) by Epw. S. Houpen and S. W. Burnuam. 
Proressor HoupEn and Mr. Burnham were invited by the 
Lick Trustees to observe the. transit of Mercury on the 7th of 
November, with the smaller instruments which have lately. 
been set up at the Lick Observatory. 
Professor Holden observed with a Clark comet-seeker of 4 
inches aperture and a power of 50 diameters, the highest avail- 
able. Captain R. S. Floyd, President of the Lick Trustees, 
p= + 87° 21' 3". 
A= + 2" 58™ 14°6 from Washington. 
The computed time of first contact is (using the elements of 
the American Ephemeris), 2" 9™ 42*-3, 
The local mean times as observed were, 
First Contact, 
Holden: 2000 Se 2) 11™ 983. 
Burpham: 3620 oe: 2° 10" 41°91; H— B= + 21°92, 
Second Contact, 
Holdeai 2. 2) 12™ 958-8, 
VG 6 or eee Qh ygm 15°05 H—F= + 1058 
Barnhaty 25000 | oe 2°12” 5°7; H— B= + 20*1. 
Duration of Ingress. 
Holden... 0,-2.1, 99". 1 Barbar |... _ 47 24"6. 
* Drs. G. H. Gardner, G. Durant, Ed. Birmingham, N. Bozeman, L. Damainville, 
J. N. Hinton, Francis Delafield, F. H. Hamilton, D, Chamberlain, Elias Marsh, J. 
G. Johnson, Joseph Halderson and J. G. Allan. 
