B. F. Shumard on the Primordial Zone of Tezas. 213 
The substance which I have here described would doubtless 
be valuable as a dye if it could be obtained in sufficient quantity, 
for the richness of its colors leaves nothing to be desired, but it 
is only a secondary product in the reaction which produces it. 
Until it can be obtained in sufficient quantity to admit of its 
constitution being determined, I propose to call it Ionnaphthine, 
from vo», a violet.* 5. 
(2.) 
If the muddy brown liquid mentioned at (A) in the 2d para- 
graph be treated with liquid ammonia, brown flakes separate. 
If these be treated with dilute sulphuric acid and bichromate of 
potash they become black. They then do not dissolve in water 
or alcohol, but dissolve in dilute nitric acid to a deep violet 
e 
ionnaphthine. “This substance may possibly be identical with 
that described by M. Du Wildest and obtained by him by oxyd- 
7. 
(3.) 
If the solution of dinitronaphthaline in alcoholic ammonia 
be heated with solution of sulphite of ammonia, the red solution 
assumes a rich deep rose color, far richer and more brilliant than 
the Original solution. I have not as yet been able to isolate this 
substance. 
_ Dinitronaphthaline is as fruitful in colored derivatives as ani- 
line. Treated in solution in alcoholic ammonia with stannous 
Roussin’s “artificial alizarine 
tained it varies from copper to sealing wax red, but does not 
seem to me likely to be valuable as a dye. Roussin's alizarine 
will no doubt be very much so. ; 
Arr, XXVII.—The Primordial Zone of Texas, with descriptions 
of New Fossils; by B. F. SHUMARD, 
5 oy the appendix of Dr. Ferd. oe 
in : , 
exas, published in ae aba river, which are refer- 
sch of the Lower Silurian system, 
and subsequently in his og iets von ae pee a 
op) 
mae specimen of this new coloring matter 
€ says of its beauty —Eps. ek ee 
+ Rep, de Chimie anh uée, Mai, 1861, p. 172, M. du Wildes is bs co in ro 
Posing that a reaction which he has obtained is the first instance of @ productio: 
of an original body nitro-substitution compound. 
