AURORAS OBSERVED AT CAMBRIDGE. 



187 July 10. Brilliant Aurora. 



188 " 11. Diffused Aurora. 



189 " 12. Auroral arch 5°, well defined. 



190 " 13. Aurora faint. 



191 Aug. 14. Aurora, 3° to 5° high. 



192 Sept. 2. Auroral arch, 6°. 



193 " 4. Aurora with streamers. 



194 Sept. 5. Aurora, with merry dancers. 



195 " 6. Auroral arch, 3°. 



196 " 12. Bright Aurora between clouds, 

 from 9 h to 10 h . 



197 " 16. Auroral arch. 



198 " 17. Aurora low and diffused, at 10" P.M. 



199 " 18. Bright auroral arch, 3°, streamers. 



200 " 29. Pine Aurora from 7 h to 9 h P.M., 

 with streamers. 



201 Oct. 5. Aurora, P. M. 



202 " 9. Between 7" and 8 h , R. F. B. saw the 

 flashing of auroral light though the clouds. 



203 " 13. Indications of auroral light through 

 the clouds. 



204 Nov. 10. An Aurora, low, with streamers, 



confined to an altitude of 10°. 



205 ." 11. Strong Aurora witli streamers seen 

 through the openings of clouds, in evening. 



206 " 12. Aurora. 



207 " 15. Aurora, at 9 h P. M. 



208 " 16. Aurora, at 9 h P. M. 



1853. 



209 Jan. 9. Faint Aurora at 10 h P. M. 



210 " 30. Aurora bright and broken, at 10 h P.M. 



211 Feb. 1. Aurora low and bright, at 9 h P. M. 



212 " 14. Brilliant Aurora, P. M. 



213 Mar. 8. Aurora, at I0 h 30 m P. M. 



214 " 13. Faint Aurora. 



215 " 18. Aurora in the evening. 



216 April 5. Bright Aurora with wane cloud, 



along the northern horizon. 

 21.7 " 9. Slight Aurora, P. M. 



218 May 2. Bright and active Aurora, P. M. 



219 " 4. Dull Aurora. 



220 " 5. Dull Aurora. 



221 June 1. Aurora at 10 h P. M., fine arch. 



222 " 6. Slight Aurora from 9 h to 10 h P. M., 

 with wane cloud. 



223 " 9. Aurora, from 9 h to 10 h P. M. 



224 " 14. Auroral arch, diffused, 10 h P. M. 



225 July 12. Active Aurora, broken arch and 



streamers, at 10 h P. M. 



226 Sept. 1. At evening, an Aurora. 



227 " 2. Soon after sunset, a bright Aurora 



was visible, with streamers reaching nearly 

 to the zenith, brightest from 8 h to ll 1 '. 



228 Sept. 3. Aurora through clouds. 



L'2'.l " 4. Slight Aurora. P.M. 



230 Oct. 31. Aurora low and diffused, P. M. 



231 Nov. 2. Aurora low but pretty, P. M. 



232 Dec. 24. First Aurora this month. 



1S.54. 



233 Jan. 2. At evening, a double arch, Aurora 



remarkably well defined. 



234 " 23. Bright auroral arch, altitude 7°. 



235 " 28. Bright Aurora, at evening. 



236 Feb. 4. Strong and active Aurora, at 9 h -10 b . 



237 " 10. Bright Aurora, broken, at 9" P. M. 



238 " 27. Strong Aurora, with bright flashes. 



239 Mar. 16. Long bright beams of Aurora. 



240 " 21. Aurora in evening, low and diffused. 



241 " 28. Aurora, long beams of light. 



242 " 29. Aurora in masses, at 9 h P. M. 



243 April 20. Faint Aurora, at !> h P. M. 



244 '* Yl. ."Strong Aurora, bright beams at 9 1 '. 



245 " 23. Bright Aurora, at 9 h P. M. 



246 May 1. Aurora at (.•veiling. 



247 " 15. Aurora seen through broken clouds. 



248 " 16. Aurora in streamers, at 9 h P. M. 



249 " 19. Aurora low and faint, 9 h -10 h P. M, 



250 June 12. ' Active and bright Aurora, very 



changeable, undulating to the westward, 

 appearing to shoot this side of some cirro- 

 stratus clouds, at 9 h -10 h P. M. 



251 13. Aurora, fine evening. 



252 July 10. Aurora. 



253 Sept.-13. Aurora in the evening, streamers 



and wane cloud. 



254 " 21. Aurora in the evening. 



255 " 26. Bright auroral double arch, stream- 

 ers below, at 8 h 50 ra . 



256 " 27. Streamers low, at 9* 1 5 ra P. M. 



257 Oct. 18. Bright Aurora from 9 h to ll h P. M. 



258 Nov. 20. Aurora at 10 h P. M. 



1855. 



259 Jan. 10. Aurora, at 9 h P. M., low. 



260 Feb. 5. Diffused Aurora, at 9 h P. M. 



261 " 6. A bright well defined auroral arch, 

 altitude of apex 6°, at 10 h 30 m . 



262 " 12. Aurora amid cirro-stratus, at 9 h . 



263 Mar. 12. Very bright Aurora, extremely ac- 



tive, double arch, dark below, colored light, 

 most brilliant from 7 to 8 o'clock. By 10 

 o'clock it had subsided to a few streamers 

 and diffused light, with something resem. 

 bling cirro-stratus clouds low at the north. 



