28 
REPORT—184?. 
the fluid, 60 induction is nothing more than the repulsion of the fluid obomWj 
by its existing in excess on anotlier close to it. Ihis he exemplifies bvlbeisjaw 
of two bits of paper positively electrified, which will repel one anotheri becasafe 
arc light and Jtexible, as well as bad conductors; but in the case of two criindfa t 
diflercnt result ukw place, from their being too heavy to be moved b»4<W: 
and, if metallic, being likewise good conductors, the fluid thatis mcxceMwJlnm 
to the opposite end of each cylinder, if they should be both charged, jccariiigtedi 
law of similar Btatea. For the same reason, when two iosulated wires art [bia 
side by side, and a charge sent down one of them, the presence of this eicesrftt 
is sufficient to cause a displacement of the normal eJcctricily of the 
it drives before it; and, on the current cemsing to be directed down lhefifSwift.^k 
fluid that had been displaced on the other wire, being now unopposed, itIium»*! 
it, and distributes itself over tlio wire in the same way os at the outset. 
r rum these and other txtiiaidcrations arlducetl, the author is of opinion'Jut 
cue of electrical phaenoinenon, however complicated, may be referred to eitli£r**t** 
tiuii or repulsion. 
On the Magnetic and Meteorohgie Observatory at Jiomhaf 
By A. B. Orlebar. 
The comparatively low price of intellectual labour in India has enabled tlitcto 
vatorics there to accomplish more work than any other. The market-vaiueof*^ 
competent to take the observations, and of sulficieot general information tu 
terest in his duty, ia not greater than that of an English plougbmaa ; andthr^tW 
value of one qualified to share In the labours of the guperintendent is less tins 
of two. Thus, in nine mouths of 1845, there had been produced the 
of an unusually thick volume of obaervaUons. whicli had been prmtal »' ® 
Amcncan mission press of Uombny, by order of the Hon. East India CoiiipiBr-J 
which was laid before the Section. Arrangements had been made st> 
liomlmy observations of each year Hhonld be in the hands of the printer at 
of that year, and Iw ready for’issne at the end of the next. Thus, sli 
turns would be available at a very earJv date for the use of magnetists amlBW«" 
luguts. At the end (»f each volume it Is inteuded to append whatever redutW” 
superintendent may have been able to accorapliah without impeding ^ ja 
^ sorvations themselves. The volume before the Section contained «dact-J«^ 
dwlmation and horizontal force for 1845 only. The peculiar methotl 
^ductions had been effected was briefly explained. In seeking to wtitn.te^'JJ 
“n observations, it appeared tliat the arcurary of the term-day 
h*'"' ®*^®5**V darswben each instrument wasread®^ 
I ‘"'i ‘horizontal fnree, the accuracy of the 
gf^Rter tlian the latter. Thisc discrepaiwries were 
A ‘-•oncentration of the observer’s mind in obsenmg. W* 
’ /“i *” smaUcr cbnngts which may occur 
teii * i“ Instituted for 1847, the hourly observations haw 
thU arrangement however 
preserved according to the desire of the Associan^ ^ 
third diurriftl tliose of pr^xding vears, have 
Si .Sr. change, nz. the vertical force. Tbepmcticaldifficultieswh“*^i^ 
Keen found magnetometer had been snnnounted;^^, 
which ^ advisable to emspend all dependence upon the induction 
rJS theoretic objections, whi'h (if just) render tke.J^. 
tical U ***': “"f**^*^ magnetometer is that tlw 
niaht rhe 2® ,7 T . flluminaie the crosses of the balance 
ttfuniteL.?*? vibration. it was proved by exp^g 
•ttribmin* magnetism, there 
permitted thiq t ^''ything but light. The accidental construction of the 
•■'."by *=‘>- n-e sun's rav, were thrown on tho n«dle. bo* “ 
y eflection on the whole line of the needle, on the north end, and on « 
