(2) 
largely increased by him; valuable gifts of palms were 
received from Mrs. C. P. Huntington, from Mrs. Finley J. 
Shepard and from Mr. Percy Chubb, and many other 
tropical plants from other donors; the great cactus collec- 
tion has been increased by rare species from Ecuador, 
collected by Dr. J. N. Rose. New horticultural plan- 
tations were installed south of the herbaceous garden, on 
the land used last year for the convention garden of the 
Society of American Florists and Ornamental Horticul- 
turists, including extensive series of gladioli, cannas, rose 
mallows, and hardy chrysanthemums, and the path 
system here has been extended by several hundred lineal 
feet. Some additions have been made to the collections 
of trees forming the arboretum, and about 600 lineal feet 
of additional paths have been partially constructed there, 
through the plantation of magnolias. 
The total number of kinds of living plants now repre- 
sented in out-of-door plantations and under glass is approxi- 
mately 14,524, as against about 14,195 in cultivation 
during 1917. We now have more kinds in cultivation 
than in any previous year. 
Additions to the library aggregate 703 bound volumes, 
this large collection of books now numbering 29,237 bound 
volumes. Museums and herbaria have been increased by 
about 24,127 specimens; through continued effort by Dr. 
Rusby, the collections forming the economic museum have 
been increased, largely rearranged, and mostly catalogued; 
the publication of this catalogue will be a noteworthy 
contribution to economics. 
Work has been in progress during the whole year on the 
construction of the new greenhouses at conservatory 
range 2, through the munificent gifts of $50,000 each for 
this purpose in 1917 by Messrs. Daniel Guggenheim and 
Murry Guggenheim; the contractors have been much 
delayed by conditions beyond their control; it is now ex- 
pected that these structures will be completed in the spring. 
Through the same gifts and the accumulated interest 
