Bust of Dr. Hutton. 305 
satisfactory mean values of the heights of the stations of observa- 
tion, with notices on the terrestrial refraction, founded on reci- 
procally observed elevations and depressions. ‘This, where one 
of the stations is on the plains at the height of 853 feet above 
the sea, and the others observed from it are from 6,500 to 11,500 
feet above it, appears on the mean to be ]-11 19 of the are; 
but when the lower station is 7,000 feet above the sea and the 
higher about 14,000, the refraction is on the mean 1-16 81 of 
the are. To which is added a note of the Azimuth of the prin- 
cipal stations. : 
8. Latitudes, Longitudes, and Elevations ef the stations of 
observation, and of snowy and other remarkable mountains and 
principal places. 
9. APPENDIX, containing geodesic Calculations and Investiga- 
tions, with twelve tables for facilitating the calculations, within 
the limits of the Survey, and explanations of their uses. 
10. Complete detail of the measuresment of each portion of 
the base line. 
11. Plan of the small triangles. ; 
12. Plan of the great triangles, comprehending also the small 
triangulation. 
The Meeting determined that this elaborate and valuable pa- 
per should be printed in the 15th volume of the Researches, the 
14th volume being now nearly completed. 
LXX. Intelligence and Miscellaneous Articles, 
BUST OF DR. HUTTON. 
A SUBSCRIPTION has been opened for a Bust of Charles Hutton, 
LL.D. F.R.S. &c. &c. to be executed in marble by Mr, Se- 
bastian Gahagan. 
This bust is intended as a mark of high respect and veneration 
for the character of Dr. Hutton, and as a tribute of gratitude for 
his impertant labours in the advancement and diffusion of mathe- 
matical learning during the long period of sixty years :—a period 
which will be memorable in the history of science, on account of 
his meritorious services both as an Author and Teacher. 
As an Author, it is well known that his numerous publications 
have been uniformly held in the greatest estimation, and that even 
his earliest productions continue as standard works of increasing 
popularity in every country where the English language is under- 
stood. His persevering exertions also, as the conductor of sci- 
entific journals, during the above period, have had the most 
powerful effect in exciting emulation, increasing the number of 
Vo}. 58, No, 282. Ocf. 1821. Q) 4 able 
