4 BULLETIN 1232, U. S. DEPARTMENT OE AGRICULTURE. 
Table 2. — Rainfall in the Canal Zone and Panama in 1921. 
Month. 
1921. 
January 
February 
March 
April 
May 
June 
July 
August 
September 
October 
November 3.45 
December 4.28 
Pacific section. 
Total.... 
Station average 
Number of 
years of rec- 
ord 
Number of 
rainy days... 
Ins. 
1.53 
.-65 
.58 
.92 
8.05 
4.87 
4.32 
8.25 
5. 32 
11.25 
Ins 
1.49 
3.14 
3.29 
1.90 
8. 28 
7.20 
8.92] 
9.3S: 
3. 28 
14^76 14.30 
5.20 5.09 
4. SI 4. 13 
Ins. 
0.26 
.76| 
1.461 
1.9l! 
7.7v 
7.67 
7.08 
9.94 
51.75 
7 
103 
67.95 78.59 
Ins. 
0.04 
1.53 
.17 
1.17 
8.72 
9.81 
7.02 
9.41 
7.26 
11.06 
8.78 
3.42 
Central section. 
Ins. 
0.03 
.84 
.36 
.42 
6.12 
9.51 
11.02 
12.57 
9.94 
10. 58 
11.99 
4.86 
Ins. 
0.15 
1.58 
.52 
.65 
7.28 
9.36 
11.72 
13.90 
7.85 
13.65 
10.47 
4.39 
Ins. 
0.09; 
5.391 
.09 
1.16 
5. 89 
12.81 
11.33 
15.68 
10.48 
11.83 
6.96 
4.42 
Ins. 
0. 23 
1.05 
.03 
2.38 
4.43 
11.87 
16. 05 
19. SO 
13. 52 
18.42 
8.85 
3.88 
Atlantic section. 
In?. 
2.50 
4.19 
1.07 
4.87 
10. 73 
14.49 
16.74 
15. 70 
13.94 
9.79 
19.37 
7.19 
Ins 
3.32 
2.93 
.26 
6. 63 
9.76 
15. 23 
15.50 
15.41 
15. 69 
9.28 
22. 26 
8.87 
53.47| 71.65 65.65 68.39 78.24 SI. 52 86.13; 100.51 122.58 
79.32 86.84 
90 90.79 95.03 101.77 
227 
118. 85 
14 
24S 
Ins. 
2.01 
2.74 
.79 
14.08 
13. 23 
13. 17 
19. 73 
13. 71 
9.09 
21. 04 
9.03 
Ins. 
1.31 
1.63 
.98 
7.43 
13.61 
15. 18 
10.49 
18.45 
11.21 
8.27 
19. 96 
6.50 
Ins. 
4.21 
5.20 
2.57 
6.61 
17.46 
18.77 
13.59 
30.32 
10. 65 
4.S4 
31-34 
9. 53 
123.31 
120.00 
17 
267 
11 
5.02 
155. 09 
127.85 160.00 
51 
252 
10 
30S 
Rainfall for the year was slightly above normal over the Pacific coast and- the greater part of Gatun Lake, 
and slightly below over the Atlantic coast and southern part of the central section. January and March 
were the months of least rainfall. August and November were generally months of greatest rainfall. The 
1921 dry season was not very dry, as has been the case during some past years. 
RELATIVE DAMAGE BY THE FAMILIES OF TERMITES. 
Species in the family Rhinotermitidee are apparently the most in- 
jurious termites in Panama, although very destructive species occur 
in the families Kalotermitidae and Termitidse. Damage by species 
in the family Rhinotermitidae include injury to living trees, the 
woodwork of buildings and other timber, and damage to lead- 
sheathed cables. Species in the family Kalotermitidae are very in- 
jurious to the dry woodwork of buildings and furniture in build- 
ing.-, whereas species in the family Termitidse are injurious to living 
fruit, coconut, and other trees, the woodwork of buildings, fence 
posts, and telephone and lighting equipment. 
Damage by termites is serious on both the Atlantic and Pacific 
slopes. 
Sometimes, particularly in case of furniture in buildings, it is 
difficult to determine what species of termite is responsible for the 
damage without destroying the infested article. This is due to the 
fact that soldiers or winged or dealated adults have to be found in 
order to identify the insect. In other case-, when the owner finds 
furniture or books damaged by termites his wrath is so great that 
he destroys the articles without saving specimens of the termites. 
This was the fate of a volume of La Salle law books destroyed by 
termites on a shelf in a building in Panama City (PL X. €). 
Aside from the damage done by termites to the woodwork of build- 
in irs and their contents, the flight of the winged termites is a great 
annoyance in Panama. When these termites swarm or fly in great 
numbers, as has been noted at several localities in Panama, notably 
