216 Scientific Intelligence. 
Notes on some porn in the Mineralogy and ee of 
Tah: te W. P. Brake. (From a letter to Prof, B. Smiimay, 
dated Salt a City, J ‘dg 27, 1871.)—I left New Haven hurriedly 
to reach t mma Mine and examine it. It is a remarkable mine, 
quartzite, and rest upon th mense masses of syenitic grani 
which form the picturesque peat peaks of the Wahsatch. 
These strata are all much uplifted and con torted, some of the harder 
Pp 
in color, while the syenite is light gray, and they show the 
peculiar scale-like crusts seen on the aul weathered Via 
surfaces ehove the Yosemite. 
the limestone fo rmation, I have seen ee peculiar and snitercaling 
= from other parts of the Terri tory. Sal Ammoniae 8 
Meader in the southern part of the Territory. It is associated 
a ain brown dodecahedral garnets, and considerable hort- 
ote on Coal-measure Fucoids ; by G. C. BroapHEAD.— 
(Communication dated pets Hill, Mo. July 14th, 1871.) 
e 
p. 302, Lesquereux reports the occurrence of Ficoides Cauda 
gall, in a sandstone of Crawford Co., Arkansas, in the nei, nee 
hood of the coal-fields. Considering it Devonian, he is puzzled at 
its occurrence there, and suggests the possibility that it has ~ * 
i cers than had till now hoon 
eastern coal- bean of ens aky. the pmeuenerste is sometimes 
auda-galli.” It 
