Page:Narrative of a survey of the intertropical and western coasts of Australia, Volume 2.djvu/622

 GEO.OOV.] N ATU]R,4J H!8'roRY. 597 the former, d while e demiou  mlmii ca{cau mat' r w ti}l iu pgresm, the portions Brat conmo{idaied must have eu mhatd by cmideble violence. But, we no such fiaen est, te uuequ dieusion of componeu at first uniformly mixed,d even the ormatiou of nodules differing in proportions fwm e p which surrounds em, may rhapa admit of expiration, by some preaa alous to what takes place in the preparation of the com- aurid of which the ordin earleaware ia mufactured where, ough.  ingrien  divided by mhanicai at&tion only, a ao of chemical action produces, under cef- tin circussmuts, a new arrantsent of e pa'. And this explana6on may, probly,  exnded to those n dular concretions, generally consider  eonmpomneous 'with e pte in which ey are envelod, the distinction of which, from conglomema of mechical origin, forms, in many cases, a difficulty in geolo. What the degree may be, of subdivision required to dispose the pa. icles to act thus un each other, or of fluidity to admit of their action, remains 8ll to be deined. r, by ing tint sedately diffud in wr to the comime of tMck etonre, and when mix in due on e rne pr eonnteme by emtion. During'thin prs if the zmtiou  n pid and iia, or if the iuients leR to t on eh r, even for znty-four h., e flinty p- cle8 uui in dy ns, d the m8 ome8 unfit for po8 of t muur. I  iudeb for t8 f which, l.lieve, is well kwn in me of the des,  my fde' Mr. Ahur kiu. d Mr. Hhel infoa me, that a Xcge k ple in ently pipit carenate of r; which, if le long moh conc8 in h of a  cour, much  dcuiy Mluble in mouia than t 0 pi.
 * e day and pvedz fiin am ebined for the une of

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