LOUIS PASTEUR 117
“The New Order of Sainthood”
JOSEPH LEIDY 131
“Joseph Leidy, Founder of Vertebrate Palæontology in America”
EDWARD DRINKER COPE 149
“A Great Naturalist”
THEODORE ROOSEVELT 165
“Theodore Roosevelt, Naturalist”
THE TWO JOHNS 183
“The Racial Soul of John Burroughs”
“John Muir”
HOWARD CROSBY BUTLER 207
“Howard Crosby Butler, Explorer”