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PIONEERS OF PROGRESS
MEN OF SCIENCE
Edited by S. CHAPMAN, M.A., D.Sc., F.R.S.
HERSCHEL
BY THE REV.
HECTOR MACPHERSON
M.A., F.R.A.S., F.R.S.E.
AUTHOR OF
"ASTRONOMERS OF TO-DAY," "A CENTURY'S PROGRESS IN ASTRONOMY"
"THE ROMANCE OF MODERN ASTRONOMY," ETC. ETC
