142 Scientific Intelligence. 



HtCM-ry Hunt ; as probably some mistake may have 1)eeii made in 

 our spooimens. We must, liowever, in this case too, eomplain of 

 the very meajxiv ■'luA unsatisfactory account given of tlie "anal? 

 and tubuli"' in tlie otherwise more detailed notice of the Cht'liii!,- 

 ford ''Eozoon,'' published in the Am. Journ. of Sci., p. 77, of Jan- 

 uary last. No evidence whatever is offered tt) show by wliat pro- 

 cess the chemical nature of these parts was determiucd;— wlietkr 



"cah-areous skeleton" was based on an examination by pohiri/ >! 

 light; or whether they do not consist of some soluble silica, or .i 

 a mixture of a carbonate and a silicate such as would bo quite „> 

 readily acted upon liy weak acid as their imbedding sul)>t.iik'i', 

 especially if it be dolomite. We wish to call parlimlar attontion 

 to the last point, as brief mention ha^ already been niiulc of a 

 specimeu of elaBolite (a translucent variety, from ]>re\ig). \^lu<'K 





^liirhtlv coherent 



skeletons of fragments, or of crystals— resi>ectivelv of serpen 

 or some other silicate— which rc-main after their waste had f 

 arrested through changed conditions. Moreover, it testifies to 

 having succeeded in fornung from eheolite, by 

 solvent, conii<j:m-ations approximating to tin' 



k Wfentific ExpnlHion to the Rock,, MoHnto;>,s.--'^\^^' "^l 

 College seicntili*- party, in charge of Professor <). C. MAI2^^,^^nH 

 left New Haven in June last for the Rocky Mounti.ins, rctunW t^ 

 this city on the 18th of December. The i.art\, which Ava^ ^-^^-^ 



i,..* of tU 



