198 The American Geologist. September, isos 
oil and naturul gas, and to his private business interests, which 
require much of his time. 
Owing to the refusal of congress to vote the usual appro- 
priation for the IJ. S. Geological Surve}', all field work has been 
suspended, and all the assistants, and many of the principal geol- 
ogists have been directed to close up their notes, putting them into 
condition for preservation or later use, as may be required. Many 
of the employes are discharged. The curtailment effects paleon- 
tology, petrography and chemistry most severely, and topography 
least. Messrs. Iddings, Penrose and Barus accompany Profs. 
Chamberlin and Salisbury to the University of Chicago. 
On the newly established Iowa survey, Mr. Charles R. 
Keyes is first assistant, and Prof. Gr. E. Patrick, of Ames, Iowa, 
is chemist. 
Two NEW DISCOVERIES OP MANGANESE Ore were reported by 
Mr. Edward Halse, at the recent meeting of the North of Eng- 
land Institute of Mining Engineers, one at Mulege, in Lower Cal- 
ifornia, and the other at Arenig, Wales. The first is on the west- 
ern shore of the Gulf of California. Here several outcrops of 
manganese ore veins are found crossing the trachyte which forms 
the bulk of the rock. The veins consist of psiomelane and gyp- 
sum and they vary in thickness from a few inches to three or four 
feet. The prevalent direction is about northwest to southeast. 
The chief veins run in wavy lines, consisting of a succession of 
curves, each a few feet long. The best ore is found at La Trini- 
dad, where two veins intersect. 
That found in Wales is in the Lower Silurian formation in 
Eastern Merionethshire. There are deposits of trappean ash and 
feldspathic porphyry, accompanied with manganese ore. This 
ore consists chiefly of psiomelane and occurs in much the same 
manner as does that of Lower California. 
Prof. William P. Trowbridge, of Columbia College, died 
suddenly of heart failure, Augnst 12, at his home in New Haven, 
Conn. In connection with the U. S. Coast Survey, he made many 
valuable contributions to scientific knowledge, and for a time held 
the position of scientific secretary to the superintendent of the 
Survey. His loss will be felt by the Institution in whose Faculty 
he held an honored position, and by the many scientific societies 
of which he was a valued member. 
