131 
TAB. CCLXVI. 
Tue upper fine specimen from Raghlin in Scotland is pre- 
served in the collection of G. B. Greenough, Esq., and is 
so beautiful as almost to surpass representation. The 
crystals are thinner and smaller than mine, but longer and 
very numerous, and their numbers give an idea of their 
being merely spicule; but being magnified they may be 
seen to have the same formation as in the larger ones. 
The lower specimen came from Cave Hill near Belfast, 
and, like one of Mr. Greenough’s, has almost all the ends 
broken away ; which perhaps often happens, as I have seen 
many so, by their running in opposite directions against 
each other, which they frequently do; and in this and other 
instances the circumstance becomes interesting, as the 
inside reflects a transparent shadow owing to a small opa- 
city on the outside, which seems natural to it, and on 
viewing the ends, gives them a rather singular and new ap- 
pearance, somewhat resembling Chiastolite.x—See tab. 116, 
right hand geometrical figure. 
Is not the Nadelstein, Needle-stone, Needle-zeolite of 
Werner, the same with this substance? It is found in Ice- 
Jand and Lower Brittany. 
K 2 
os 
