be’ entirely destitute, either of the power of retaining’ magnet- 
ism, or becoming magnetie by” induction from currents in the 
crust or otherwise.* This is evidently an error; that the iron, 
&e. can retain'no magnetic condition of itself, is very probably 
‘true, but that the magnetic metals and all their compounds retain 
acertam degree of power to become magnetic by induction, what- 
éver their temperature, has now beew proved. The )mag- 
netic. contents of the earth, therefore, though they probably do 
not’ constitute of themselves a central magnet, are just in the 
condition to act as‘a very soft iron core to the currents around 
them, or other inducing actions, and very likely are highly, im- 
‘portant in'this respect. What ‘the effect of the-diamagnetic part 
inay be under the influence of such inductive forces, we are not 
prepared to state ; but as far as Ihave been’ able to observe, = 
bodies have not-their power diminished by heat. 
/24530-1f the sun Have anything to do with ‘the tides tio of 
| the globe, then it is probable that part of its effect is due to the 
aetion of the light that comes to us from it; and in that expec- 
ion the air seems most’ strikingly placed rotind our sphere, in- 
vesting it with a transparent diamagnetic, which therefore is per- 
i, ‘meable to his rays, and. ‘at the same time moving with great ve- 
Y across them. Such conditions seem to suggest the possi 
ity of magnetism being there generated ; but I shall do better 
efrain from giving expression to these vague thoughts (though 
they will press in upon the mind), and first submitting thém: to 
rigid investigation by experiment, if they prove ——— then pre- 
| m seenener to this camper —e" 
TPR ae Poh 
“Ane, ; EER Capingrapiy by Prof O. Dew, D. and “a D. 
; ne yy ‘ (Append, continued from Vol. xlix, First Series, p- 48.) 
‘ have —_ cs ey” “ae “No. 199. C. flaccospermi, Dew. 
‘Spies distinctis ; staminifera unita ehiiact ‘squamam ob- 
Jongam deka ferehtes pistilliferis 3-6 tristigmaticis, oblongis 
ie eylindraccis, sublaxifioris: bracteatis, Superiore subsessile, inferior- 
: Doversne pedunculatis, suberectis, subremotis ; fructibus ovatis, 
OB Io1 is, subobtusis, acer 9m nervosis, ethan subinilatis, ore inte- 
Syhike! ere 1845, vol. — p- 3. 
Es, Vol. II, No. 5.—Sept-, } 6. 
