PHYSIOGRAPHY. 



Heavy Spar. 



251 



Fig. 236. 



Cheshire, (Conn.) 

 Fig. 237. 



Cheshire, (Conn.) 

 Fig. 238. 



Fig. 228. Primary form, with its obtuse angles trunca- 

 ted. P on d =140 59' 21". (apophane, H.) Fig. 229. 

 The same, with the faces d enlarged, d on d=78 1' 58". 

 (binaire, H.) Fig. 230. Primary form, with its acute an- 



