4 BULLETIN 1232, IT. S. DEPARTMENT OF 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 



December 



Total.... 



Station average 

 Number of 

 years of rec- 

 ord 



Number of 

 rainy days... 



Pacific section. 



Ins. 



1.53 



.65 



.58 



.92 



8.05 



4.87 



4.32 



8.25 



5.32 



11.25 



3.45 



4.28 



53. 47 



Ins. 

 1.49 

 3.14 

 3.29 

 1.90 

 8.28 

 7.20 

 8.92 

 9.38 

 3. 28 



14. 7G 

 5.20! 

 4. Si! 



71.65 65.65 



67.95 



23 



173 



Ins. 

 0.04 

 1.53 

 .17 

 1.17 

 8.72 

 9.81 

 7.02 

 9.41 

 7.26 



11.06 

 8.78 

 3.42 



68.39 



79.32 



14 

 190 



Central section. 



Ins. 



0.03 



.84 



.36 



.42 



6.12 



9.51 



11.02 



12. 57 



9.94| 



10.58 



11.99 



4, 



78.24 



86.84 



31 

 176 



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 

 5.39 

 .09 

 1.16 

 5.89 

 12.81 

 11.33 

 15. 68 

 10.48 

 11.83 

 6.96 

 4.42 



81.52 86.13 



80.90 



17 

 224 



90.79 



39 



227 



Ins 

 0.23 

 1.05 

 .03 

 2.38 

 4.43 

 11.87 

 16. 05 

 19.80 

 13.52 

 18.42 

 8.85 

 3. 



100.51 



Ins. 

 2.50 

 4.19 

 1.07 



4.87 

 10.73 

 16.49 

 16.74 

 15. 70 

 13.94 



9.79 

 19.37 



7.19 



122.58 



95.03 



11 

 ? 



101.77 

 10 



Atlantic section. 



Ins. 



3.32 



2.93 



.26 



6.63 



9.76 



15. 23 



15. 50 



15. 41 



15. 69 



9.28 



22.26 



8.87 



125. 14 



118. 8- ; 



14 

 248 



Ins. 

 2.01 



2.74 

 .79 



4.69 

 14.08 

 13. 23 

 13.17 

 19.73 

 13.71 



9.09 

 21.04 



9.03 



123.31 



17 

 267 



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 



4.84 



31.34 



9.53 



115.02 155.09 



127. 85 



51 



252 



160. 00 



10 

 308 



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 Rhinotermitidse are apparently the most in- 

 jurious termites in Panama, although very destructive species occur 

 in the families Kalotermitidse and TermitidaD. Damage by species 

 in the family Rhinotermitidse include injury to living trees, the 

 woodwork of buildings and other timber, and damage to lead- 

 sheathed cables. Species in the family Kalotermitidse are very in- 

 jurious to the dry woodwork of buildings and furniture in build- 

 ings, 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 cases, 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 (PI. X, G). 



Aside from the damage done by termites to the woodwork of build- 

 ings 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 



