In cases where no city is given in the address, Washington, D. C., is to be understood.
ABBE, PROF. CLEVELAND, a, l,
Army Signal Office. 2017 I Street.
ABERT, S. T.,
1928½ Pennsylvania Avenue.
AHERN, JEREMIAH,
Geological Survey. 804 Tenth Street.
ALLEN, DR. J. A.,
American Museum Natural History, New York, N. Y.
APLIN, S. A., JR.,
Geological Survey. 1513 R Street.
ARRICK, CLIFFORD, a,
Geological Survey. 1131 Fourteenth Street.
*ASHBURNER, PROF. CHARLES A.
ATKINSON, W. R., a,
Geological Survey. 2900 Q Street.