SECRETARY’S REPORT 193 
TaBLe 1.—Annual rainfall, Barro Colorado Island, C.Z. 
Year Total Station Year Total Station 
inches average inches Average 
OD eA AE) Ue OATS (Rl 2522 Se OAD i ees TE WL Ako) 108. 55 
LOZGs a Seer eee = aye 118. 22 LBS 5 Gr} PAGAS ae Ss oe Seep ae 120. 29 109. 20 
HNO Sey Bap Sh we ee 116. 36 MAS OS OAs = oe oe Fe Hae 111. 96 109. 30 
DC Pros ee a ee LOM 52 IDOE Se ||| Miey ee ee eee 120. 42 109. 84 
NO 2 OR ree as oe 87. 84 1OG ES On| |P1946= 25 55e =a 87. 38 108. 81 
OS OR ee ee 76, 57 HOI, Sl IGA (pees ae ees 77. 92 107. 49 
LOSES? Sip See ee 123. 30 LOFRGO || ALO AS See ee See 83. 16 106. 43 
19322 leek ep ek 118, 52 LOD SAGs GOA Os ee pte 2 114. 86 106. 76 
LOS See ee ee 101. 73 NOSe325 || 950 sae e se eee 114, 51 107. 07 
IC BY Ss eases 122. 42 LOGOS eb lees ee eee 112, 72 107. 28 
1S Fs eo eee 143. 42 ATOR S orl lO 52 eee ee 97, 68 106. 94 
19302 22 Suwa el 93. 88 HOSS 9S5|| MOSS aa a ee ae 104. 97 106. 87 
LOS is ST 124. 13 PON D2N|| UO ba eee eee ahd 105. 68 106. 82 
NO38esn aber jose 2 117. 09 LONG 2ZT plo bb a ee eee 114, 42 107. 09 
QS Gece say ee ee 115. 47 TOS 94 G5 Oe Se eee 114. 05 107. 30 
OA Qrse terns fans 86. 51 ODES Pa |e a7) ee er ee ee 97. 97 106. 98 
LOA Meee cee ae 91. 82 108. 41 10 a te lege tot 100. 20 106. 70 
TaBLE 2.—Comparison of 1957 and 1958 rainfall, Barro Colorado Island (inches) 
Total 1958 Accumu- 
Month Station Years of | excess or lated 
average record deficiency | excess or 
1957 1958 deficiency 
January {Sens = oe ee 0. 56 4, 26 2. 21 33 | +2. 05 +2. 05 
Hebnianyee ss ee = ff 7. 34 1. 41 33 | +5. 93 +7. 98 
1) (ho) 0 ees ape eS Le 02 2. 98 le vail 33 | +1. 77 +9. 75 
JANG) GU OSs app aun cere oes ee 05 4.73 3. 02 34 | +1.71 | +11. 46 
INT pt eyeh Fae = or oe 6. 37 12, 22 10. 91 34 } +1.31 } +12. 77 
JUNC =e ee ee 5. 97 8. 89 10. 89 34 | —2.00 } +10. 77 
July tee ee see et 10. 86 9. 54 11. 60 34 | —2. 06 +8. 71 
Aupuste: Sau eye ie 2 21. 90 12. 35 12. 47 34 —.12 +8. 59 
September. = (ack. 12. 40 10. 64 10. 06 34 +. 58 +9. 17 
Octoberses= === 7, 22 15, 42 14, 04 34 | +1.38 | +10. 55 
November... 2.2. = 17. 96 7.16 18. 44 34 }—11. 28 —.73 
December:-- ==. == = 4, 09 4, 67 10. 44 34 | —5. 77 — 6. 50 
Vea = Same DUO |p MOOS 2D | WG FO ||sa- Sse ass Seo —6. 50 
Dry season_____-___-- 1. 20 19. 31 ’gS5) (ae. G24 dele ee Es +11. 46 
Wet season__________-_ 96. 77 80. 89 OS eS 5 ue a ee. ape —17. 96 
A 60- by 30-foot wire-screen shed was built to provide space for 
the smaller cages and storage of materials. This has relieved much 
of the crowding problem at the station. 
