106 
1. A study of the drug-producing trees of the Pacific coast. 
. Pharmacological effects of the volatile oil derived fron. Um- 
bo 
bellularia californica Nutt. (myrtlewood), of Oregon. 
ios) 
Histo-pharmacological effects of caffeine upon the cardiac 
tissue of the turtle was begun. 
ca 
Comparison of the topography, purposes, and activities of 
Pacific coast and Atlantic seaboard botanic gardens was made. 
REPORT OF THE CURATOR OF PUBLIC 
INSTRUCTION FOR 1941 
To THE DIRECTOR: 
Tsubmit herewith the report of the work of this department for 
the year 1941. 
ATTENDANCE 
Grounds.— The number of visitors to the Garden, as recorded 
by the turnstiles at the five entrance gates during 1941, was 
1,753,331, a considerably larger figure than that of last year, 
1,687,564, but not as large as that of 1939, 1,798,029. With the 
exception of that year the attendance in 1941 was the largest 
ever recorded at the Garden, 
Monthly attendance.—In two of the months the attendance 
exceeded all previous records. These were May, with a total of 
335,455 visitors, and August— 168,882. The largest previous 
figure for May was in 1938—331,095, and for August, in 1940— 
162,907. 
Week-end attendance.— 53,458 persons visited the Garden in the 
week-end May 3-5, a slightly higher figure than the number on 
May 11-13 of the previous year, namely, 52,796; but the figures 
have never reached the total for April 30-May 1, 1939—56,145. 
However, the attendance for several successive week-ends in the 
latter part of April and early May was very large, due, probably, 
to the good weather and the carly blossoming of many of the 
