How Old Are Fossils? | Project Gutenberg

LIST OF GEOLOGICAL LEAFLETS
ISSUED TO DATE

No. 1.	Model of an Arizona Gold Mine	$ .10
No. 2.	Models of Blast Furnaces for Smelting Iron	.10
No. 3.	Amber—Its Physical Properties and
	Geological Occurrence	.10
No. 4.	Meteorites	.10
No. 5.	Soils	.10
No. 6.	The Moon	.10
No. 7.	Early Geological History of Chicago	.25
No. 8.	Agate	.50
No. 9.	How old are Fossils?	.25
D. C. DAVIES, Director

FIELD MUSEUM OF NATURAL HISTORY
CHICAGO, U.S.A.

LEAFLET 9.PLATE I.

A VIEW OF THE GRAND CANYON OF THE COLORADO RIVER,
ARIZONA.

ZOROASTER IN BACKGROUND.
Photograph by O. C. Farrington.

Field Museum of Natural History

DEPARTMENT OF GEOLOGY
Chicago, 1927

Leaflet Number 9