510 
WRIGHT: FOLIAR PERIODICITY 
fall of leaf takes place at such a rate that the tree is half bare 
by the 3rd January, but has not thrown off the whole of last 
year’s leaf until the end of April. New leaves appear, 
however, early in January when only half of the old leaf 
has dropped, and the tree has usually put on a complete new 
outfit by the end of April. 
Albizzia amara , Boiv.—A tree of this species was in 1896, 
according to Mr. Broun, then Conservator of Forests in 
Ceylon, leafless for a short time. 
9.—Ceyion, Malaya, and Australia. 
. ] 
Leap-fall. 
New 
Leaves 
appeared. 
Leafless 
Phase. 
Com¬ 
menced. 
Finished. 
Peltophorum ferrugi- 
neum, Benth.; Pera¬ 
deniya. 
1901-02 f 
Dec. 2 
January 
Jan. 14 
— 
June 
July 
J une & 
— 
July 
1902-03 $ 
Dec. 3 
January 
Jan. 21 
— 
A Vi/ ••• A 
June 
June 
June 
— 
1904-05 
Dec. 
i 
|Feb. 
January 
— 
10.—Ceylon and Tropical Asia, &c. 
Lam.; Peradeniya. 
1902 
1903 
1904 
Peradeniya. 
1902 
1903 
1905 
! Leaf-fall. 
New 
Leaves 
produced. 
Leafless 
Phase. 
! Com¬ 
menced. 
Finished. 
. Feb. 20 
April 
Mar. 10 
.Feb. 
March 
Mar. 10 
_ 
. Feb. 2 
March 
(Mar. 14 
— 
Jan. 21 
Feb. 1 
Feb. 10 
1 
8 days 
. Jan. 20 
Feb. 16 
Feb. 24 
7 days ! 
. Jan. 14 
Feb. 23 
Mar. 2 
8 days j 
1 
