Notices respecting New Books. 213 



Alt. 5° 36' A.M. ) Interval S^" 0' ) , oi, =r< lo" aoo ^o, 



Alt. 45 6 A.M. I Decl. O 12° 0' N. ! ^"'^ r = 2" 55 12- =43" 48' 



Lat. 27° 0' COS. 9-94986 

 By the method given in the Nautical Almanac, the latitude, 

 aftei- two corrections, is found to be 27° 59' ! 



Another example of the second case,wrought by formula (2), 

 will, it is conceived, be not superfluous, and we shall take it 

 from the same. 



Alt. 76° 6' A.M. ; Interval &' 20' ) T = 5'' 39' 28" 

 Alt. S 3 P.M. 5 © Declin. 20° 0' N. 5 t = 40 32 



(A+a)=84 9 6 20 



i ... 42 4> COS. 9-87056 i{T+ r)=3i' 10' 00" =47° 30' sin. 9-86763 



i(T-T)=2'> 29' 28"=37° 22' sin. 9-78313 



(A-a)=68 3 COS. 8=20° 0' 9-97299 



i ...34 U sin. 9-74785 



39-61841 

 29-62375 



29-62373 



Lat. = 8° 58' COS. 9-99466 



The true latitude then is 8° .58' N. instead of 10° 1' found 

 by Dr. Brinkley's indirect method. 



I have not noticed any other of the many methods that 

 have been given for the solution of this problem ; as their 

 length, indirectness or inaccuracy, or all these together, ren- 

 der them of little use to those who have occasion to reduce 

 them to practice. 



Hackney Road, London, Sept. 3, 1825. JaMES BlJRNS. 



XXXI. Notices 7-especti?ig New Books. 



Recently Published. 



ANTEDILUVIAN Phytolog>', illustrated by a collection 

 of the Fossil Remains of Plants, peculiar to the Coal 

 Formations of Great Britain. By Edmund Tyrell Artis, 

 F.S.A. F.G.S. author of Roman Antiquities. 



This work contains twenty-four engravings of new and in- 

 teresting fossil plants, with their generic characters, specific 

 dilferences, descriptions, and localities. Royal 4to. 



Flora 



