CATALOGUE. — PRACTICAL ASTRONOMY, GEOGRAPHY. 



361 



Asserts, that from a comparison of the different angles of 

 the triangles employed, it appears that none of the mea- 

 sureracnls can be considered as sufficiently accurate to au- 

 thorise us to attribute any irregularity to the earth's figure. 

 Roy thinks his observations of little importance. 



Klostermann sur le degre du meridien. 4. Pe- 



tersb. 1789. R. S. 

 Meister on Mayer's scale for reducing angles 



to the horizon. Commentat. Gott. 1785. 



Vlll. 75. 

 Williams on the earth's diameters. 4. Lond. 



1786. 1788. R. S. 

 Klugel in Bode's Jahrbuch. 1787. 1788. 



On the magnitude of the zones. 1790. 



Goth. Mag. Ill.ii. 148. 

 Krafft on the length of the penduhun in dif- 

 ferent latitudes. N. A. Petr. 1789. VII. 



215. 

 Pictet's proposal for a measurement near 



Geneva. Ph. tr. 1791. 10(5. 

 Topping's measurement of a base in the East 



Indies. Ph. tr. 1792. 99- 

 Suremain on the figure of the earth. Roz. 



XLI. 239. 

 Cagnoli on determining the figure of the 



earth. Soc. Ital. VI. 227. 



By observing the lunar parallax, and its effect in an oc- 

 cultation : a differenc* of about o" ought to be found in 

 some cases. 



Henry on the length of the pendulum at Pe- 

 tersburg. N. A. Petr. 1793. XI. 524. 



K'dstners mathematische geographic. 8. Gott. 

 1795. 

 Ace. Hind. Arch. II. 100. 



Prony's formulae for the axes of the earth. 

 B. Soc. Phil. n. 1. 



*Report from the committee of weights and 

 measures, on the new measurement of the 

 meridian. M. Inst. II. 23. B. Soc. Phil. n. 

 28. Journ. Phys. XLIX.98, l6l. 



The error of the three angles of go of the triangles was 

 between l" and 2". The bases were measured by rods of 

 platina, their ends being placed near each other, and the 

 distances measured by a micrometer. They also served as 

 parts of metalline thermometers for correcting the errors of 

 expansion. The degrees were found to diminish all the 

 way from Dunkirk to Montjouy.in a distanccof 9.673 7 9722°;' 

 but they decreased at first slowly, then more rapi.lly, and 

 then slowly again. 



Dclamhre Arc du meridien. 4. Par. 1798. R. I. 



Clay on the figure of the earth. Am. tr. V. 

 312. 



Burja on the length of the pendulum at Ber- 

 lin. A. Berl. 1799. M. 3. 



Lambton's mode of geographical survey. As. 

 Res. VII. 312. 



With the measurement of a degree in the Mysore country. 



Melanderhielni on the measurement of a 

 degree in the north. Zach Mon. corr. I. 

 372. 



Melanderhielm and Svanberg on geographi- 

 cal measurements. Zach Mon. corr. II. 

 250, 257. 



Melanderhielm on the degree measured in 

 Lapland by Svanberg and Ofverbom. Zach 

 Mon. corr. VII. 56l. Journ. Phys. LVI. 

 400. 



Pasquich on the use of the French geogra- 

 phical measurements. Zach Mon. corr. I. 

 435. 



Pasquich on the effect of elliplicity on pen- 

 dulums. Zach Mon. corr. II. 3. 



Knogler on the measurement of a degree 

 in China. Zach Mon. corr. I. 589. 



Note on the earth's ellipticity deduced from 

 lunar observations. Ph. M. VII, 186. 



Nonet's degree measured in Egypt. Ph. M.. 

 XII. 208. " 



Play fair on the figure of the earth. Ed. tr. 

 V. 3. Nich. VII. 102. 



VOL. IT. 



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