Notices respecting New Books. 367 
lated compass will soon bring it into general use, a3 an indis- 
pensable aid to the security of navigation. 
Dear sir, 
I] am your obliged and faithful servant, 
Hydrographical Office, East India House, - JAMES HoRSeuURGH. 
May 15, 1819. 
*,* We have been informed, but we know not how correctly, 
that Mr. Jennings effects the insulation of the needle by inclos- 
ing it in a double case, having the space between filled with 
clippings of iron, previously heated, or, as it is called, cemented 
with red oxide of iron or hematite. If Mr. Jennings himself or 
Mr. Horsburgh will furnish us with the necessary particulars, we 
will cheerfully devote a portion of our pages to the making known 
more generally the nature and merits of so useful a discovery and 
application.—Epit. 
LXITI. Notices respecting New Books. 
Remarks on the Account of the late Voyage of Discovery to 
Baffin’s Bay, published by Captain J. Ross, R.N. By Cap- 
tain Edward Sabine, Royal Artillery. 40 pages, Svo. 
Is our last we noticed the work referred to in the title of this 
small publication, and justice demands that we should also no- 
tice the subject of the work before us. The author states the 
object of his pages to be, “‘ to counteract the erroneous im- 
pression which a perusal of Captain Ross’s recent publication 
might produce concerning the author’s employments, services, and 
opinions during the voyage.” “‘ As Captain Ross’s is not an offi- 
cial but a private work, I should,” says Captain Sabine, ‘‘ have 
been unconcerned had the mention of my name or occupation 
been even wholly unnoticed ; but when I perceive that observa- 
tions which I was sent to make are therein published as having 
been made or furnished by others, and various information copied 
from my papers is given as his own, whilst I am principally intro- 
duced as having held an appointment (that of Naturalist) the 
duties of which I am represented as not having fulfilled, but which 
duties formed no part of my official engagement; I am obliged 
in justice to myself, and in consideration of the respect due to 
the authority by which I had the honour of being recommended, 
to show the true nature of my undertaking, and that I have not 
failed in executing it ; to claim the observations and information 
which are exclusively my own, and to remark on other points 
with which Captain Ross has connected my name.” 
The author shows, by a letter from Mr. Brande, writen by 
the direction of the President and Council of the Royal Society, 
addressed 
