JUN 3- 1909 
PREFACE 
This Memoir is designed to present the results derived from crit- 
ical studies of coniferous remains from certain of the Cretaceous 
deposits at Kreischerville, Staten Island, New York, especially from 
two exposures, locally known as the Androvette pit and the Drum- 
mond pit—excavations made for the purpose of obtaining clay and 
sand for the manufacture of fire-brick, terra-cotta, etc. 
The material upon which the studies were based was secured 
largely through the cordial coöperation of Ше Messrs. Androvette, 
owners of the property, by whom permission was given to collect 
specimens at all times, and also to make special excavations in search 
of desirable material, and who provided, at their own expense, the 
labor to prosecute the work of digging and rough handling of the 
material. 
In connection with the preparation, study and illustration of the 
material the following individual work of the authors 15 indicated. 
The senior author is responsible for the selection and preparation 
of the larger specimens and for identifications based upon external 
characters, this part of the work having been done at the New York 
Botanical Garden; the junior author for the selection, preparation 
and microscopical examination of the smaller specimens and lignites, 
and for identifications based upon internal structure, these features 
of the work having been accomplished in the Phanerogamic Labora- 
tories of Harvard University. Plates 1 and 2 are reproductions of 
photographs taken by the senior author; Plates 3-6 of drawings 
of selected specimens made by the senior author; Plates 7-10 of 
drawings made by the senior author from enlarged photographs of 
selected specimens made by the junior author; Plates 11-29 of photo- 
micrographs of sections made by the junior author. 
In all other respects this Memoir is a joint contribution. 
ARTHUR HOLLICK, 
New York Botanical Garden. 
EDWARD С. JEFFREY, 
Harvard University. 
