53 
Cuba on the 5th, for the purpose of making an examination of the 
flora of that region, in which they will have the codperation of 
Professor de la Maza, of Havana. Herbarium material, objects 
for the systematic and economic collections and living plants for 
the conservatories will be secured. A critical study will be made 
in the field of several West Indian genera of mosses and flower- 
ing plants. The expedition is expected to return early in April. 
The total precipitation in the Garden during January, 1903, 
amounted to 4.03 inches. Maximum temperatures of 45° 
the 2d, 45.5° onthe 11th, 47° on the 17th, 48° on the 21st, and 
51° on the 28th were observed ; also minima of 12° onthe 11th, 
6.5° on the roth, 7° on the 21st, and 14° on the 26th. 
The temperature of the soil at a depth of a foot (30 cm.) 
recorded by a Hallock thermograph showed a variation from 
38° on the Ist to 41° on the 3 Ist. 
The total precipitation during February amounted to 4.57 
inches. Maximum temperatures of 52° on the 3d, 57° on the 
13th, 41.5% on the 16th, and 63° on the 28th were observed ; also 
minima of 26° on the 7th, 30.5° on the 14th, and 5° on the 18th. 
The temperature of the soil at a depth of a foot (30 cm.) varied 
from 41 on the Ist to 44.5 on the 27th. 
The dropping of sap from the branches of the sugar maples 
along the driveway, east of the Museum Building, was first 
noticed this year on February 7, and on the following day had 
formed sap icicles as much as a foot in length on several of the 
trees. Other indications of the approach of spring are seen in 
the flowering of the skunk cabbage in sheltered places, first no- 
ticed in full bloom on February 11, and in the partial unfolding of 
the catkins of Siebold’s willow, first noticed on February 2. 
A fully expanded flower of the ‘Christmas Rose” (edleborus 
niger) was observed on February 8. 
ACCESSIONS. 
LIBRARY ACCESSIONS FROM JANUARY 1, 1903, TO FEBRUARY 9. 
‘merican Quarterly Microscopical Journal. Vol. 1. New York, 1871. (By 
exchange with Dr. Britto 
BARBEY, WILLIAM. aay genus a cl. Ch. Cuisin illustratum, Lausanne 
1885, (Given by Prof. F. S. Earle.) 
