TRANSACTIONS OF THE SECTIONS. 
35 
saiditioD.someof whom are acquainted with the locality of Haramerfest and Alten ; 
fflfJMr.Ronalds, of the Observatory at Kew^informs me that there is at Kcw asmall 
ippu&tus for electrical observations, which in his opinion might bo advantageously 
toplored at Alten for this purpose, and not at present in use j and he has with a 
tne Kal for science volantcer^ to supply such parts of the apparatus as may be 
Udsn and which might be retjuired. 
it ffli^t bo the more desirable to carry this object into effect during the present 
nrit Alten, as tflectro>metcurQlugical observations might be carried on siciultane- 
«olr siih those which are about to be made at Bombay under the superintendence 
tf Orlebar, the apparatus for which place is nearly completed. 
At Alten there is a transit instrument by Mr. UuUond, and a sidereal clock by 
«. Dent of London, and lhe»e insirumenls will probably be used by the Swedish 
who arc expected at Alten to measure the arc of the meridiau, in verifying 
Iktrifotk by astronomical observations. 
If the British Assodatton should think proper tq recommend this undertaking to 
wBoyal Society of Stockholm, some Swedish or Norwfjpan olBccrs would probably 
k Jppointed to carry it into effect, and the offer of some iostnunents from this 
hweation might he acceptable, and would bo received with due acknowledgement. 
iVofttsor L^gberg and Mr. Esm&rk of Christiania, and Mr. Au^stus Georgii 
•“ICoont Rosen, and Mr.^iUson of Stockholm, will favour the meeting with their 
and the recomraendatiuu of this Society might be conveyed to the Swedish 
w%itia5by these gentlemen, being nieu of science, on their return to their country. 
Aljo the advantages to be derived ffonv simultaueous observations at Kew under 
®*of Mr. Ronalds, and at Bombav under Mr. Orlebar, and at Altco, relative to 
HWras magnetism and clectricity,’woald bo nt this time of the greater import- 
to it is to be hoped that obsurvationa cm those branches of science are now 
“ifl^niade on the northern coast of America by the expedition under the command 
WLaptiuu Sir John Franklin, R.N. 
neeatablishmcnt of un observatory at Alton would assist to illustrate some re- 
h made by Mr. Airy in his paper on the Auroras in 1845 ; and Mr. Birt, in his 
nt paper on Atmospheric Waves, has named Alten os one of the places where 
"^vatioiis should be maile. 
“ Trangactiuns of this Society and of the Royal Astronomical Society of London 
UiBoally presented to the Litcraiy and Scientific Society of Alton. 
*“®8**’- might be laid before the Committee of 
near Aylesbury, 
June 22,1847. 
John Lee. 
nroperties of the Solar Radmlion in producing or preventing a 
-iS'l/ufir Plates coated with Iodine or its compounds^ 
^^Cn/orhic and Bromine, modified by coloured glass media and the 
of the atmnsjihcrc. By M. Claudkt. 
P^'*°®?P^e^8had found that the red, orange and yellow rays were endov^^d 
action, preventing and destroying that produced by white lignt, 
called photogenic rays. , 
that the first who discovered this property was Dr. Draper, who made 
'^ys of the spectrum upon the Daguerreotype plate ; but 
^ ^ Werschcl had made similar discoveries with the pure rays o 
“P*’" photogenic papers. ^ 
^ red, orange and yellow rayswluch protect the 
knladft?. I’hotogcHic action were tlierasclves capable, when isolatetl, of 
photogenic effect. 
antagonistic or destroying action exercised by the red, 
”‘y»' M- Kd. Bccquerel announced that these rays were endowed 
-'^ CuLb^^v^ continuing the action commenced by the photogenic mys. 
of observations upon light Iransmitted through cer- 
through the vapours of the atmosphere, and through red, 
^ yellow glasses. 
D 2 
