144 TRANSACTIONS OF THE [FEB. 19, 
Spheroidal granites, on the whole, are much more basic than 
the general magma from which they have been segregated. 
It is quite possible that this segregation may have been brought 
about in accordance with Soret’s principle, but it is hardly justi- 
fiable to base inferences of this sort upon a boulder which is 
not in place. 
ADDITIONAL NOTE ON THE OCCURRENCE OF 
LEUCITE IN NEW JERSEY. 
By J.) . Kemp: 
(ABSTRACT. ) 
Prof. Kemp reported the discovery of fresher material than 
was used in his previous paper* on leucite in New Jersey, and 
the fact that the mineral fulfils the microscopic, optical and 
chemical tests for leucite. The specimens were derived from a 
dike in the limestone quarries at Rudeville, some three and 
one-half miles northeast of Franklin Furnace. The full note is 
to appear in the American Journal of Science for April or May, 
1894. 
Mineralogical Notes. 
By GerorGce F. Kunz. 
TOPAZ FROM NEAR PALESTINE, TEXAS. 
Five erystals, all more or less rolled, showing that they had 
been taken from the bed of some stream or brook, were lately 
sent to Messrs. Tiffany & Company, of New York, on the sup- 
position that they might be diamonds. Four of these proved 
on examination to be topaz crystals. The largest one, of a faint 
pale green color, with dull rubbed surfaces, somewhat rolled and 
fractured, and with slightly etched faces, resembled the more 
highly modified crystals of this species from Alabashka, in the 
Urals, and from Colorado. Itssize was 17 by 16 by12mm. The 
following faces have been identified and verified by measure- 
ments with the hand goniometer; the base, (001), domes (021) 
and (041), pyramids (111) and (221) and prisms (110) and (120). 
It is very similar in habit to some of the topaz crystals found 
in Colorado. 
* On a basic dike in Northwestern New Jersey that has been thought *to con- 
tain Leucite, Amer, Jour. Sci., April, 1893, p 298. 
