222 =D. G. Brinton on Central American Languages. 
and hydrogen as that which, I conceive, is burning on the su 
face of the luminous cone, and which there, above the point af 
the latter, produces the maximum temperature. ; 
Unfortunately, a direct solution of the question by ani 
-vestigation of the gases contained in the luminous envelop, ¥ 
exceedingly difficult. Much remains to be done in the study 
of the details of the differentially variable processes by which 
the familiar phenomenon of a luminous flame is produced ; bu! 
what is known is at least worthy of a place in the text-books. 
a 
Art. XVII.—A Notice of some Manuscripts in Central Ame 
ican Languages ; by Dante G. Brinton, A.M., M.D. 
: ‘Tue natives of Yucatan and most of those who formerly 
inhabited the provinces of Vera Paz, Chiapas, Guatemala, 
— _ Pokome, the Tzotzil, tle : 
D pose or most nearly to resemv™ 
é parent stem, and the Honsines he Pamaulk = which was : 
