130 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1949 
Even more urgent is a new laboratory and storage building, which 
will require a small addition to the clearing back of our present 
laboratory site. This structure should be built with concrete posts 
and sills, and concrete-block sides, and should have at least six rooms. 
Provision should be made for the periodical use of heat in order to 
reduce the growth of molds. ‘This building would provide separate 
rooms for the library, for scientific records, for storage of cameras 
and other delicate apparatus, for the herbarium, for laboratory glass- 
ware, and for chemicals. The entire building should be well ventilated, 
but in addition glass windows should be provided so that when 
necessary these can be tightly closed and heat used. High humidity, 
the subsequent rapid growth of fungus, and the need of protection 
from termites are problems of the first order in the Tropics. 
Other urgent needs are steel storage cabinets, metal bookcases 
with closing glass fronts, metal card-index cabinets for the species 
index and the library index, and sectional steel letter files. 
TaBLe 1.—Annual rainfall, Barro Colorado Island, Canal Zone 
Total Stalion Total Station 
Year inches average Year inches average 
192522223 eee (042g ie Sea se 119 footer 124. 13 110. 12 
192622. ees ree! 118. 22 PUSH GW OSSs ts: Sa See = 117. 09 110. 62 
Cys eee 116. 36 ANA 68: OS Oh Se 115. 47 110. 94 
LO2Sase 2 ee ee 101. 52 Ps So O40 Ss ae ee ee 86. 51 109. 43 
D2 Qe ts 2 eel 87. 84 HOGT DG OL2S aes ae eee 91. 82 108. 41 
NOS ORS s eee ee 76. 57 1 ACO 1 ty 2 a SO 108. 55 
LOSI OS ea eee 1238. 30 04769) 1943222. See 120. 29 109. 20 
LOS2 etres chon ees 113. 52 LOSS 7 GN NOLES 22 ogee Ss 111. 96 109. 30 
NOG Sees oe er LOTS LOS O21 O45 2> 22 se Se ae Se 120. 42 109. 84. 
LOS 4S eee ee 122. 42 1OGO4 N94 Ge ee oe eee 87. 38 108. 81 
19S es Seu eet ee 148. 42 1UNOVS DOA ee ree bee ae 71. 92 107. 49 
LOSG 4252 2 pee 93. 88 LOS: 98iO4S =e a ee 83. 16 106. 43 
TABLE 2.—Comparison of 1947 and 1948 rainfall, Barro Colorado Island, Canal 
Zone (inches) 
Total Accumu- 
Station | Years of | Excessor | lated ex- 
Month average | record j|deficiency| cess or de- 
ficiency 
DANUSLY See ee ee ee 1,84 2M ee ne eee | ae eee 
Webruarys ee See as fea ee 1, 22 23 —1.03 —1.03 
Marchese: 5 eae ener eney, Sa mye ee 1.36 23 —1.19 —2, 22 
Aprile sche 2 RS oe ee aes ea ee 2.81 24 +0. 11 —2.11 
ia y eee ee ae ee eae a eee em ee 10. 85 24 —0.05 —2.16 
JN eee es ee ee 11.10 24 —4, 78 —6. 94 
BIL (eee ge ee pe ee ee ee ee 11. 61 24 —0.16 —7.10 
IANIQUB tH eae ee ee ee ee 12. 44 24 —1.98 —9.08 
September. a a eee 10. 27 24 —3.5 —12. 63 
Ostober2223 so ae eae eee 13. 07 24 —2. 33 —14. 96 
November! 25-220 ose oe ie ot eee eS 18. 84 24 +1. 49 —13. 47 
December ss sess aes ee ee 11.02 24 —9. 80 —23. 27 
TVCAt! See Si aeen oe ee ee 1OG2437 baw =. 855 2 eee —23. 27 
(Dye aee as =e ae re ee TQRIESE ES S| ees —5. 36 
NG) eee ee See Se ee ee ee 99520-22282. 25.255. 35-3 —17. 91 
