65.3 



accompanies, namely, diallage rock, gneiss, mj- 

 caceous schist, argillaceous schist, arid chlorite 

 schist, than to be itself disposed in strata. Yet, 

 in different places, the courses of the individual 

 strata can be distinctly traced, parallel to the 

 general direction of the whole, an ; d dipping in a 

 similar manner ; although the spams or divisions 

 between them are not strongly marked. In 

 this respect, however, it is no more, obscure than 

 gneiss and micaceous schist often are; since, in 

 these also, the stratified disposition is, in indi- 

 vidual instances, rather inferred from analogy 

 than deducible from observation. It still more 

 strongly resembles limestone in this respect ; the 

 primary rocks of this nature being often very 

 obscurely or imperfectly stratified ; while, occa- 

 sionally, they show no marks of that disposition, 

 but rather seem to form, like serpentine, large 

 imbedded shapeless masses or huge irregular 

 nodules. 



It will not be difficult now to see, that, by 

 attending to the analogous disposition of these 

 limestones, all the masses of serpentine yet des- 

 cribed will be found to be disposed in similar 



