140 



REPORT — 1855. 



Table VIII. — Showing tlie mean horizontal motion of the air in miles 



for the years ending Novemher 30, 



1851-52. 



Dec, Jan., Feb 



March, April, May 

 June, July, August 

 Sept., Oct., Nov. ... 



1852-53. 



Dec, Jan., Feb 



March, April, May 

 June, July, August 

 Sept., Oct., Nov. ... 



1853-54. 



Dec, Jan., Feb 



March, April, May 

 June, July, August 

 Sept., Oct., Nov. .. 



1854-55. 



Dec, Jan., Feb 



March, April, May 

 June, July, August 

 Sept., Oct., Nov. .. 



0-U.M 



Dec, Jan., Feb 



March, AprU, May 

 June, July, August 

 Sept., Oct., Nov. .. 



1-2 



13-8 

 8-5 

 9-5 



107 



13-5 

 10-3 

 10-0 

 100 



137 



107 



9-5 



12-6 



13-3 



111 



10-4 



8-9 



141 



8-4 



100 



10-9 



139 



10 5 



9-6 



10-3 



132 



102 



9-6 



12-2 



138 

 10-9 

 107 



8-6 



2-3 



14-3 



8-0 



10-2 



10-3 



147 

 110 

 9-4 

 10-4 



13-2 



10-4 



9-4 



12-4 



137 

 10-9 

 10-G 



8-9 



3-4 



151 

 7-9 

 9-5 



10-8 



146 



10-8 



9-3 



10-3 



13-2 

 111 

 9-4 

 127 



13-6 

 11-3 



10-8 



4-5 



15-4 



8-0 



100 



10-9 



155 



11 1 



97 



10-2 



13-2 



106 



9-4 



12-6 



130 

 111 



10-6 

 8-8 



5-6 



14-9 



8-4 



10-2 



10-6 



15-4 



10-9 



9-6 



107 



13-9 



106 



9-0 



12-3 



13-5 



11-4 



111 



8-6 



6-7 



14-6 

 88 

 11-3 

 10-5 



15-5 

 11-6 

 101 

 107 



140 

 10-8 

 100 

 12-2 



13-4 

 11-9 

 11-6 



8-9 



7-8 



150 

 90 

 12-2 



10 8 



160 

 12-6 

 11-6 

 11-4 



141 

 11-8 



11 1 

 127 



137 



121 



12-2 



9-3 



8-9 9-10 



15-5 

 10-3 

 12-8 

 117 



154 

 137 

 12-4 

 117 



141 

 127 

 121 

 12-8 



137 

 131 

 12-6 

 101 



15-6 

 11-3 

 13-5 

 118 



161 

 14-5 

 12-8 

 11-8 



14-9 

 13-4 

 12-8 

 137 



14-2 

 13-6 

 12-9 



10-8 



Mean , 



charted, and we are to hope for a discovery of the laws that regulate them. 

 I would propose, tlierefore, that stations be established to aid in carrying out 

 an Anemometrical Survey of the Atlantic ; in the first place at Bermuda, the 

 Azores, and Madeira; also one or two on the South Coast of England, and 

 on some Southerly point in Ireland. To these it would be desirable, if pos- 

 sible, to add two or three stations on the Atlantic Coasts of Europe and 

 America. This plan, which I suggested at the Physical Section of the 

 British Association in 1849, would, I believe, be the most efficient 

 and expeditious mode of obtaining the knowledge required, and the 

 advantages to be derived from it would more than compensate any 

 difficulty. Nor need tlie expense be very great; for instruments might 

 be constructed that would continue their record for several days together, 

 and thus require occasional attention only. I should recommend com- 

 mencing with the three first-named insular stations, as being the most 

 important. In addition to the information to be obtained respecting the 

 general currents of the air, the subject of rotatory storms might be investi- 

 gated. There is much to be discovered respecting them, wliicli self-register- 

 ing instruments alone are likely to supply. Tliat rotatory storms do take 

 place, there can be no doubt; but I believe the rotatory portion is much less 

 than is supposed, and may not always be in contact with the earth. The 

 present theory respecting' them does not account for many phenomena, 

 and can only be regarded as furnishing a rough approximation to their 

 real motion. 



