til 



t> 



'^i I, ,: 



y 



'^%i 



It 



>h 



^e it, ; 



I 



'ant of 



n 



B; 



ns, 3tJ 



b 



d, 



•H 



^K 



kt, c 

 limlf 



;reDt ii 



I 



V I 



f 



D/ f^''- 



^r 



^0 



I 



'tif^; 



< 



'w 



HUTTONIAN THEORY. 



283 



ContlguoCis, thefe two rock 

 be of the fame formation : a 



could no 

 d thus far 



poffibly 



that every unprejudiced obferver muft agree 



him 



4 



250. But the circumftance on which Mr Wer 



feems to lay 



dual 



nfit 



fr 



greateil ftrefs, is the gra 



th 



fand to th 



through the 

 wacken : 



d 



th 



s grad 

 direct proof, th 



ite Hep 

 tranlitio 



of 

 he 



y are all of 



b a fait, 

 ay and 



Dnfiders 

 le fame 



form 



A gradual tranfition of one body 

 n only be fa id to take 



h 



poffible to define their common boundary, or t 

 determine the line where the one begins and th 



oth 



nd 



Now. if 



be the p 



of gradual tranfition, I muil %, that after much 



eful 



ft 



in 



ation, I hav 



V 



hich fuch a 



never fe 

 ranfition 



1 aa 

 takes 



place between whinftone and the contiguous 



ftrata 



Th 



F 



efs 



Bie of feparation, though in fom 



dent th 



in oth 



been marked out 



has, on the 



th great precilion 



though the Hones have been firmly united 



or, as one may fay 



Ided 



one 



yet 



h 



a frefh frad 



P 



was obtained 



ther 

 the 



ftratified and iinftratified parts haye rarely failed 

 to be diftinguiQied. The frefh frac1:ure is in- 

 deed often necelTary, for many fpecies of whin- 



flone 



