Miscellaneous Intelligence. 451 
Herrick, Twining and Marsh, seem to render this also inadmissible. Until 
other determinations of velocity are made, 96°, as determined above, or 
84° with retrograde motion, must be considered the most probable incli- 
ation. In any case the meteors of the other known annual displays cannot 
proceed from this ring. . 
moving nearly two millions of miles a d: mersed in it during 
several days. Some idea of its breadth could probably be obtained by 
observing the area of the region of emanation, or in ords, the 
oO 
average length of the perpendiculars from the centre of this area upon 
the paths, produced backward. bservations in the southern hemisphere 
from the 4th to the Sth of February are desirable, to determine whether 
the earth’s orbit cuts the ring, or disk, at the other node. 
A rude estimate of the number of individuals in the ring may be 
formed. Several observers in one place in the morning hours of Aug. 
10-11 see at least 150 meteors, of which over three-fourths are conforma- 
. Assume the average perpendicular distance of the paths of visible 
meteors from the observers to be not greater than 71 miles. This implies 
that not less than 112 meteors pass through a circle of 100 miles radius, 
the circle being at right angles to the relative motion. The velocity is 
so great that the earth’s attraction is not of much account in making the 
less than the area of a circle whose radius is 2,500,000 miles, we have at 
least (2,500,000)? X 112 v’+-(100)?v” meteors passing the node per hour. 
In 281 days, the periodic time, we have more than 300,000,000,000,000 
bodies for the whole August ring. 
V. MISCELLANEOUS SCIENTIFIC INTELLIGENCE. 
1. Return of the Arctic Expedition of Dr. Hayes.—Dr. Hayes arrived 
at Halifax, N. S., on the 9th of October (and arrived at Boston, October 
the public journals the following notice of the voyage and its results. 
The United States sailed from Boston July 10th, 1860. She reached 
Upernavik after a short but stormy passage and proceeded thence to 
Smith’s Straits, where she remained until July 10, 1861. 
On the 14th of April, however, a party left the vessel, consisting of 
thirteen men and sixteen dogs, with boats on sledges. The leader of this 
og-train is now on board the United States, and is a fine specimen of 
the species. he party reached lat. 79° in the Middle Smith’s Straits, and 
here the party divided—Dr. Hayes and three others went as far as lat. 
81° 35’, west side of Kennedy Channel, (forty miles further northward than 
the latitude attained by Dr. Kane in 1854,) and were there obliged to put 
ek, their provisions being exhausted. ° Dr. Hayes reached his vessel on 
the 27th of May. On the 13th of July, 1861, they proceeded to Little- 
ton Island, where the vessel remained until the 27 th. Sailing thence in 
a northerly direction they were met by immense packs of ice, which the 
