RID] 



198 



[BID 



Riddell, J. L. 8. On a new method of illu- 

 minating opaque objects for the higher powers 

 of the microscope ; and on a new Achromatic 

 Condenser. Silliman, Journ. XV., 1853, p. 69 ; 

 Ann. Nat. Hist. XL, 1853, p. 261. 



9. Fish-rod Balance and spheroidal evapo- 

 ration. Silliman, Journ. XXVI., 1858, p. 71. 



Riddell, W. P. On SOLEIL'S Saccharometer. 

 Silliman, Journ. XV., 1853, pp. 175-186. 



2. Analyses of natural mineral waters. 



New Orleans, Proc. L, 1854, pp. 32-34. 



Ridderbjelke, F. E. Om lefnadssattet och 

 utvecklingen af Adimonia fontinalis. Stock- 

 holm, Ofversigt, IX., 1852, pp. 213-214. 



Riddle, Edward. Kemarks on a paper by Major- 

 General BRISBANE, on the method of determining 

 the time, the error, and rate of a Chronometer, 

 by altitudes taken with a sextant from an arti- 

 ficial horizon. Tillocb, Phil. Mag. LIL, 1818, 

 pp. 409-415. 



2. On Mr. TROUGHTON'S expedient for 

 correcting errors arising from the excentricity 

 of the point round which the indexes revolve 

 in Reflecting Circles. Tilloch, Phil. Mag. LIV., 

 1819, pp. 161-163. 



3. Remarks on Mr. MEIKLE'S paper on 

 finding the Longitude by lunar observations. 

 Tillocb, Phil. Mag. LIV., 1819, pp. 241-252. 



4. Final remarks on finding the Longitude 



by lunar observations, &c. Tilloch, Phil. Mag. 

 LV., 1820, pp. 219-223. 



= 5. Claim to the invention of a new method 



of determining the Latitude. Tilloch, Phil. 



Mag. LVIL, 1821, pp. 364-366. 

 6. Observations on the present state of 



Nautical Astronomy. Tilloch, Phil. Mag. 



LVIIL, 1821, pp. 321-335. 



7. Suggestions for simplifying Mr. IVORY'S 



solution of the Double- Altitude Problem. Til- 

 loch, Phil. Mag. LX., 1822, pp. 167-170. 



" 8. A description of BARCLAY'S Hydrostatic 

 Quadrant, and an account of observations made 

 with it. Tilloch, Phil. Mag. LXVIIL, 1826, 

 pp. 270-280. 



9. On finding the rates of timekeepers. 



[1828.] Astron. Soc. Month. Not. L, 1827-30, pp. 

 66-67 ; Astron. Soc. Mem. III., 1 829, pp. 215-228. 



1O. On finding the Longitude from an 



observed occupation of a fixed star by the 

 Moon. [1830.] Astron. Soc. Month. Not. 

 L, 1827-30, pp. 170-171 ; Astron. Soc. Mem. 

 IV., 1831, pp. 305-318. 



11. Correction of the formulae for deter- 

 mining the Longitude from an observed occul- 

 tation, with suggestions for simplifying the 

 application of these and other formulae to the 

 case of corresponding observations. [1832.] 

 Astron. Soc. Month. Not. II., 1831-33, p. 105; 

 Astron. Soc. Mem. V., 1833, pp. 321-324. 



Riddle, Edward. 12. Difference of Longitude 

 of the Observatories of Cambridge and Edin- 

 burgh, deduced from the corresponding obser- 

 vations of the Moon and Moon-culminating, 

 Stars, which have been obtained at those obser- 

 vatories between Oct. 1834 and the end of March 

 1835. Astron. Soc. Month. Not. III., 1833-36,. 

 pp. 118-119. 



13. Determination of the Longitude of 



the Edinburgh Observatory, from all the corre- 

 spondent observations of Moon-culminating 

 Stars, made at Greenwich and Edinburgh, 

 between 18th Oct. 1834 and 27th May 1836. 

 Astron. Soc. Month. Not. IV., 1836-39, p. 65. 

 14. Longitude of Madras by Moon-culmi- 



nating observations, with formulae and remarks. 

 [1840.] Astron. Soc. Month. Not. V., 1839- 

 43, p. 49; Astron. Soc. Mem. XII., 1842, pp.. 

 119-132. 



15. Observed eclipses of the Satellites of 

 Jupiter. Astron. Soc. Mem. XI., 1840, p. 290. 



16. On some discrepancies in observing 



an emersion of Jupiter's first Satellite. Astron. 

 Soc. Month. Not. VII., 1845-47, pp. 249-250. 



Riddle, John. On that part of the equation of 

 time which depends on the obliquity of the 

 Ecliptic. Astron. Soc. Month. Not. IX., 1848- 

 49, pp. 51-52. 



2. On certain properties of MERCATOR'S 

 Chart, more especially with reference to the 

 curve formed by the projection of a great circle 

 of the sphere upon it. Mathematician, III., 

 1850, pp. 11-23. 



3. On a method of computing the small 



corrections for clearing the Lunar-distance. 

 Astron. Soc. Month. Not. XL, 1850-51, pp. 63- 

 66. 



4. Modifications of the formula for com- 

 puting the Latitude from extra-meridian alti- 

 tudes of the Pole star. Astron. Soc. Month. 

 Not. XL, 1850-51, pp. 133-134. 



5. Note on a method recently proposed by 



Lieut. RAPER for clearing the Lunar-distance 

 from the effects of parallax and refraction. 

 Astron. Soc. Month. Not. XIX., 1859, pp. 86-88. 



Rider, J. Description of a Rotatory Steam- 

 Engine. Quart. Journ. Sci. XVI., 1823, pp. 

 266-270. 



Ridgway, Thomas S. Report on the Oil district 

 of Oil Creek in the State of Pennsylvania. 

 Franklin Inst. Journ. XLV., 1863, pp. 269- 

 273. 



Ridiugs, James. Description of a supposed new 

 species of ^Egeridae from Virginia, and obser- 

 vations upon Papilio daunus, Boisd. Philad. 

 Entom. Soc. Proc. L, 1861-63, pp. 277-278. 



Ridley, William. On the Kamilaroi tribe of 

 Australians and their dialect. [1854.] Ethnol. 

 Soc. Journ. IV., 1856, pp. 285-293. 



