MARYLAND GEOLOGICAL SURVEY 61
to be prosecuted with such means alone as he could otherwise
The Geologist, on the other hand, was enabled to begin his investi-
gations at once upon his appointment. He proceeded as soon as the
season would permit to the eastern shore of Maryland, where he made
a survey of Talbot, Caroline and Queen Anne's counties, and later in
the season crossed to southern Maryland, where he surveyed the shore
of the Potomac in Prince George's and Charles counties. Much
attention was devoted to the marl deposits of the area visited.
" An act to provide for the completion of the new map and geo-
logical survey of this state" having been passed by the General
Assembly in March, 1835, the investigations of the survey were con-
tinued uninterruptedly. The State Geologist revisited the eastern
shore and made geological examinations of Dorchester, Somerset and
Worcester counties, and later of St. Mary's county, a full account of
which is given in the report for the year. This report also contains
the first announcement of the existence of greens and marl or " Jersey
marl " (Cretaceous) in Kent and Cecil counties.
The Topographical Engineer was compelled during the season of
1835 to continue his surveys in connection with various plans for
further internal improvements, so that his time was again interfered
with in the preparation of the new map of the state. In addition to
several maps which were prepared for special surveys, he, however,
completed a topographical map of Dorchester, Somerset and Wor-
cester counties on the scale of 1: 211200 with 4-foot contour lines, and
a similar topographic map of St. Mary's, Charles and part of Prince
George's counties on the scale of 1: 200000 with 10-foot contour lines.
Both of these maps had geological data placed upon them and were
published in the report of the State Geologist.
The State Geologist during 1836 completed the survey of Calvert
county and extended his observations into Anne Arundel, Prince
George's and St. Mary's counties, where he likewise announced the
discovery of extensive deposits of marl. A special visit was made to
Allegany county, and in his report for the year an account is given
of the Frostburg basin with its coal and iron deposits.