ON MAGNETICAL AND METEOROLOGICAL OBSERVATIONS. 65 
été addressée par cette illustre societé qu’en exprimant le plus vif désir de 
voir continuer les observations des stations magnétiques au dela du terme de 
année 1845. Tout ce quia été publié jusqu'ici aux frais et par la noble 
munificence du Gouvernement Britannique est d'une si haute importance 
pour I’étude des perturbations simultanées dans les regions les plus éloignées 
du globe que cette importance meme suffit pour motiver le désir que j’ex- 
prime. Il ne me parait pas douteux que le gouvernement Russe s’associera 
a cette continuation des observations magnétiques et météorologiques de sorte 
que pendant le séjour du Capitaine Franklin dans les régions arctiques ; les 
stations restées en activité dans les deux hémisphéres offriront des points de 
comparaison dont il serait bien regrettable de se priver lorsqu’il s’agit d’un 
interét si généralement reconnu. 
Je supplie le Committee et individuellement mon excellent ami Sir John 
Herschel d’agréer /hommage de mon respectueux dévouement. 
Lr Baron DE HuMso.pr. 
XX.— From W. C. Redfield, Esq. of New York to Lieut.-Colonel Sabine. 
New York, March 13th, 1845. 
Received at Woolwich, June 5th. 
Srr,—I had the honour to receive by the last steamer a letter from the 
President of the British Association relating to the combined system of mag- 
netical and meteorological observations, which will close on the first of 
January next, and inviting my attendance at the consultations which are pro- 
posed to be held on this subject by the principal cultivators of the sciences 
of magnetism and meteorology at the next meeting of the Association in the 
University of Cambridge, on the 19th of June. 
I regret to say that pressing engagements will prevent me from being pre- 
sent on that interesting occasion, and compel me to forego the pleasure of 
attending the proceedings and deliberations of that distinguished body. But 
I ardently desire that some means may be devised for procuring the further 
continuance of this invaluable system of combined observations in magnetism 
and meteorology. These observations, if continued, appear likely to have an 
important influence upon the progress of these sciences, and their suspension 
at this early period, when the difficulties of concerted action have been so far 
overcome and the importance of the observations has begun to be realized, 
would be greatly lamented by the friends of science throughout the world. 
I have long desired that these combined observations might be made avail- 
able for determining the course of the main current of the lower atmosphere, 
in different regions, as shown by the observed courses of the clouds, apart 
from the particular and varying directions of the winds at the earth’s surface, 
and also as apart from the low scuds or cumuli which are borne by the sur- 
face winds, for I deem this knowledge as being perhaps essential to a just 
estimate of the laws or forces which control the circulation of our atmosphere, 
_. With my best wishes for the continued prosperity and usefulness of the 
Association, and with sentiments of high consideration and regard, 
I have the honour to be, Sir, your most obedient servant, 
f W. C. REepFIELD. 
ih. Lieut.-Col. Sabine, Woolwich. 
' 
‘XXI.—In compliance with a resolution passed at a meeting of the General 
ommittee of the British Association at York in October 1844, the following 
stter has been addressed to those foreign gentlemen who have taken a leading 
1845. F 
