(47) 
Special Investigators, Students and Scholars 
There has been a decided decrease in student activities 
during the past year. Of the special investigators mention 
should be made of Professor John W. Ritchie and Mr. 
C. H. E. Redding who have continued experimental studies 
begun in previous years as reported. 
List oF STUDENTS 
The following were formally registered for research in 
connection with studies for degrees. All satisfied tuition 
charges either at Columbia University or at the Garden. 
Adams, James Fowler. claus 
Mosse. 
Stevenson, Mrs. F. (Benak ies Julia). Variegation in Tussilago. 
Twiss, Wilfred Charles. Taxon 
List oF ScHOLARS 
Gleason, Henry Allan. The genus Vernonia. 
Respectfully submitted, 
A. B. Srout, 
Director of the Laboratories. 
REPORT OF THE SUPERINTENDENT OF BUILDINGS AND 
GROUNDS 
Dr. N. L. Brirron, DrrEcTor-IN-CHIEF. 
Sir: I have the honor to submit the following report for 
the year 1918. 
Regulating and Grading 
We removed about 800 yards of earth from the coal 
bunker for power house no. 2, of which 300 yards were 
used at the Newell Avenue entrance to grade the lowland, 
300 yards for grading at the magnolia collection and 200 
yards to grade around the new buildings at conservatory 
range 2. The northern bank of the Rose Garden was 
graded with 250 yards of topsoil which had been removed 
from the paths at the southern end of the Magnolia Collec- 
