388 Scientific Intelligence. 



in tho Ann. .ALair. Xat. Hist., TV, yii, •>22. The skeleton is of 



tish to the last 

 uiither names a second Australian spe- 



.Messf>.. A. llanoock itlul T. Attlioy liavc an article on the sul.jcot 



tiiix l.re^ellt the eonelu^ioit "tluitl^diile' the^lsh^^ei•erk'('^t.!\ 

 u;..nvst to L.pid,>s:re,., it is jm.bal.ly mon- <li.tinet in genu« Imn 



eially the tbnuer (these two irenera f..r rea^ons'^tatecnn'in^ kept 

 separate), (hrat.dus, they o1>>,ery<-, - i. prohahlx a tn.e Cartila- 



thi8 



1«. CocrolithH.— Cocooliti,,,, e:,leare.)us (li>k-.hai.ea ..lu.-i-ii^. 

 reo-ar.lea by Iluxlev at firs! as a u.m-elluh.r plant (aV.;,.. a.^l .•.!:>.- 

 wanl the seeretion; of his lJath^l>iu. (analo.on^ to" .1.. .;;;,.„> 

 spieuhi of a ^pon.^e) havo heen m-entlv .vanmird h^ 11. J. C.irtor 

 (Ann. Mao. Nat. ilis,.. IV. ^ii, isi), an<l ibun.l to 'in. uhar rhoy 

 were first pronoun.c-l. t -u-t-r tin.ls th.m verv ai>un.l:n.l in >hal- 



latedberl.s or bunks of'prob.blv an). 



vs cmainlvacro, „,(-xtont,Ipuhenzed 



t^hcr'io! -i'' -^'^'"'"■''""'' ''"'^ "^''^'-'■^ 



•Pd .several Vra.nnent. whose cHls.tn|t or 





nted verv innch the appearance of the 



S'rwlShL'^dvenrS-'bh/'"^^^^ 



ansparent' area and central granule, toge- 



Lastly, considern.ir that \CZ. 





zone berc. iind so \oracioiislv fed i 



T^^z!t!^z:'z^ 



also tiiat It is so nearly allied m com 



cah,n-e„, tbat it chiefly forms the \ 



led"' of tiic .Atlantic' ocean, and tiiiit it is 



found f„s.ihzed in the chalK, I ca 



nnot belpinferrm..thatitisavo-table 



organnni which contributes cbietlv 



to forn/the <.alcareous ^1^;.";';;^^,;;;^,;;;^; 



present dny m ni.uiv p-u-ts, and \\li 





ones of th.- past, at all v., .-nts tbat of 



"the chalk'" 



JIcMjamestw.,.,Kyl.s.l/,/./. 



.,h, u„:r,-V>!h,nx. from the .Ulai.nc 



n(n'l/a!nrJA''/;^''.^^.'!tnrf 



■10^ Ulantic "^'!'*^"' '^''^'.'j^^^j''./^' ^-i- 



canTms^' ,rs'''n''l '*''.'^""i- . ?''^' 





slstin*.r^(",f t\vo\V'„/.!v, V'ui •'" \ 



:-ans|),i rent, oni •■ cY'-- o''' >JJ^Yj) the 



otherluKl re<v.ivin/>'tli('r'.'"|.;n,*| 



•"'>nririlV\''n'aviiV^;n'.l onelo- 



ing a .irranuhir proTnpIusniir .lis 

 ihe first is obtusd\ elliptieal 



'':i^^^^^^^^'^ 



