TESTACKA. 47 



and safety tlmt it seems unaccountable how they should have been time 

 connected. 



Yet as everything is harmonious in nature, and evidently tin- result 

 of ck-sign, we are bound to conclude tlmt some wise purpose contemplati .; 



this -iniriihr de\ i. -e. and tin-nee -ii|i|. n-in:: ' >i\ \>-<-\ iiiv- ihit n.it:iiv :,.,. 



erred, either in tin- true proportions or tln-ir utility, as our ignorance may 

 have led us to entertain them. 



Our knowledge of the Logarithmic Spinil Testacea is now confined 

 to minute *]>eeies comparatively, of which, if I be not mistaken, tlu- 

 greater proportion may be found in the fresh waters. But fossil remains 



lie.ir tetimon\ to the e\i>ten.-r nf \.-|\ llllfli l.i|-_'rr >-l|elU. eoll-'ei jnelit 1 \ 



their animals of this peculiar formation, scarcely any of which nrc known 

 to . \ist in a living state at the present day. 



Such are the AmmonHfs, of which numbers are dug from the bowels 

 of tlic earth in different quarters of the globe. Sjtr.e of gigantic dimen- 

 sions mny have inhabited the primaeval world. 



Those spiral sheila yet preserved in miniature are not less cunou- 

 and inten'sting. I have seen none but what are occupied by a (iiim.i or 

 Mfe 



I'l.VNoKBIS INOONSnCOA. 



This minute subject, if it could be identified with one which has 

 been already described, is said to be obtained in a fossil state. 



Figure flattened on both sides; a logarithmic spiral, ron-i>ting of 

 three volutions . diameter under half a line ; animal a limax ; tentanila 

 two, cylindrical, a conspicuous black eye at the external root of each ; 

 operculum round ; colour of the shell amber-brown, of the animal grey. 



Marine ; obtained by washing the fuci growing under low water at 

 Eyemouth. 



Among a number, none were larger ; all mere speck* to the naked 

 eye. 



