284 ExTEA Meteoeological Obseevations, Apeil 16 — July 31, 1845. 



ADDITIONAL METEOROLOGICAL NOTES. 



Apr, 



d. h. m. 



16 11 



Apr. 

 Apr. 



21 16 10. 



22 16 7. 

 17 27. 



Cirii radiating from about NE by E., but they are formed of bars lying NW by N. and SE by S. ; 

 there is a circle of light round the moon of the usual dimensions of the halo, but the interior 

 of the circle is as luminous as the circumference ; the corona is not well coloured. 

 Crepuscular arch, 7° altitude ; sun's upper limb visible at 17** 20™. 



Crepuscular arch ; reddish vapour, 3° altitude ; bright yellow, 6° altitude ; white, 9° altitude, 

 a Lyrse watched till now, when i of the sun's diameter is visible above the horizon ; had the 

 eye been a little better cared for at first, I have no doubt but it might have been seen when 

 the sun was completely above the horizon ; the eye was kept upon the star by placing the 

 eye, the star, and a comer of the Observatory in the same vertical. 



Apr. 25 11 Light on horizon to S. ^ W., like from a fire. IS^^ 58i". Very bright to N by E., altitude 10", 



as if the moon were shining thi'ough the clouds. 14*^ 6™. Bright-red glare, covering a cir- 

 cular space of 10° ; the reflection (?) is only from the upper clouds (cirro-strati Y) and there 

 is a black patch in the midst of the glare : this is perhaps the reflection of a fire as it occurs 

 in exactly the opposite point of the horizon fi'om the light seen at 11^. 



May 1 5. Beautiful and vivid double rainbow, the extremities witliin 150 yards of the observer ; four re- 



currences of the red could be observed in the suppleraentai-y bows, but the red or reddish colour 

 only could be detected, forming narrow bows within the primary ; the secondary bow very 

 distinct. 



May 1 11. Strong twilight Q.) to NNW. 11^ 6^\ Meteor to E., altitude 45°, moving towards SE. 



Thunder-storms to-day 1 3 miles oft' to SSW. 



May 4 12 59. A meteor moved up from about 45° above SE., to 65° above E. Crepuscular light throughout 

 the night. 



May 15 19. Many varieties of cirro-strati, chiefly in woolly sheets ; a few sheets of mottled cirro-strati, lines 



of cirro-strati lying N. and S., like lines of very small cumulo-strati ; zigzag lines to N. ; 

 cumulo-strati to NW. ; loose cumuli on Cheviot. 



July 31 1 50. Clouds moving up from S. and SE., very thick and black, the clouds have a variety of motions 

 inter se. 2^ 0^". Thunder to SE. 2™. Rain\ 4™. Another peal to SE. Very little rain 

 after 20". 

 2 15 — 20. Occasional peals from SE. 

 22. A flash of lightning, thunder in 7^. 



25. A fine streak to E., altitude 45° ; thunder in 6^^. 



26. A fine streak to E., fi-om altitude 20° to horizon, having the appearance of waves in a rope 



shaken. 



27. A double flash to E., forming an arch fe'om E by S. to E by N., altitude 15°. 



29. A very complex flash to E., altitude 6°, interval 12^. 



30. Streak to E., altitude 6°. 



35. A large streak went parallel to the horizon to NE., and then bisected itself at right angles, stretch- 

 ing over about 30° of horizon, interval 12^., altitude 10°. 



38. A streak about 10° long inclined to the horizon at 80° to NE., interval 8^, like an illuminated 

 serpentine copper wire. 



40. About 20 flashes have been seen since 20™, the rolls have been almost uninterrupted. 



40. Flash to NNE., interval lO^. 



41. Flash to NNE., interval 8^— 10^. 



43. Two flashes, one to NE by E., and the other to N., interval 22^. 



44. Flash to NNE., interval 13% altitude 5°. 



45. Three streaks pependicular to the horizon to N by E., interval 30^. 

 Flash to N by E., interval 33^. 



One to NE., altitude 15°, and another to N., interval 11^ from NE. ; the thunder continued 

 at intervals to NE. and N. 

 3 10. A flash to NE by N., altitude 10°, interval 14^ ; this is the only flash seen since 2^ 45™, although 

 the lightning was looked for. All the flashes or streaks had the same character, viz., like 

 the undulations of a slack rope. The thunder like the sound of a cart's wheels moving over 

 very irregular pavement, with many variations of intensity. Thunder heard last about S*" 35"". 



