188 Dr. Faraday’s Experimental Researches in Electricity. : 
Formirg small orbicular patches, an mch or two in diameter, . 
nearly white with a pale singe iy tint, thin, margm minutely | 
byssoid, sometimes slightly ra Teeth short, minutely cilia- 
ted with fine flocci, afiotabiie ‘a the very margin where they are 
merely little downy fascicles.—Resembling resupinate forms of dl 
rea but differing widely in the nature of the teeth. 
Be 130. H. ptumosum, Duby.—In rimis cort. crassee Pini. Hieme. 
bho Society Hill. 
e third Series ; by Micuar. Farapay, Esq., D.C.L., F.R.S., etc.* 
$29. On the polar or other condition of diamagnetic bodies. 
2640.. Four years ago I suggested that all the phenomena pre- 
sented by diamagnetic “bodies, when subjected to the forces in the 
. Magnetic field,, might be accounted for by assuming that they 
. then possessed a-polarity the same in kind as, but the reverse in 
Tiitecticik of, that acquired by iron, nickel and ae, magnetic 
. bodies under the same circumstances (2429. 2430.). This view 
* was received so favorably by Plticker, Reich and others, and above =< 
all by W. Weber,t that*L:had® I 
., ed;4and though certain, €Xpériments of my own (2497.) did not 
4 —. that hope, suf a my desire and expectation were in that 
ect 
2641. Whether pana copper, phosphorus, &c., when in the 
agnetic fidid, are polar or not, is however an exceedingly im- 
aes fu: 
: » Agr, XVUL—E cperimental Researches in Electricity.— Twe enty- 
. s. 
this 
iy Bod point, that,I determined, if possiagl 
Sateen enti proof ei either one way aieth 
as the rho ful, bedause of the co: 
. tive.to hich We er had eome vin his’ vé 
— ns) nportando.Lshi KG forth 
Aihara and 14,1850" | % 
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