XIV, 5 Yates: Growth of Hevea Brasiliensis 507 
distributed rainfall of any of the stations listed. —— is, 
however, a very close second. 
Rainfall data from various localities in the East ide Para 
rubber is being successfully grown are compiled in Table IV. 
TABLE IV.—Average rainfall in rubber-producing districts of the Orient. 
[Rainfall is given in millimeters.] 
Ceylon, 1905-1908.= Malaya. — Borneo, 1910-1918.4 
| 
Month. Kuala 
| Paya, | godas | FoM B: (Ine Toi coin toite Sandakan. | Jesselton. 
1915-1916.b 
2 
|< January ....-....- 67.0 47.8 74.9 822.3 50.0 801.2 106.9 
February _..______- 66.5 95.8 53.3 88.3 80.8 249.7 12.9 
eS See ae ai 100.0 125.5 201.6 228.1 237.5 187.2 45.7 
Aor oe 137.4 220.7 297.4 253.7 212.3 117.5 138.1 
May oe 133.1 304.8 136.7 132.5 316.5 126.5 209.8 
ee 241.8 234.6 170.9 163.3 251.2 114.8 807.1 
Silvie 211.8 111.2 228.2 211.8 802. 8 154.4 209.0 
Avdgast 23522253 122.9 74.4 237.9 157.5 224.5 212.8 249. 4 
September _________ 168, 1 123.9 183.7 148.0 354.1 364.5 853.1 
Ontobarc2055 | 874.4 449.6 188.3 149.9 458.2 227.8 436.4 
November ________- 173.7 361.7 193.2 252.2 805.6 292.6 280.2 
! December ___._____. 131.0 65.5 167.3 237.0 152.1 364.5 139.2 
Lote 1,927.2} 2,215.5} 2,083.4; 2,844.6] 2,945.6] 2,663.0] 2,542.8 
* Report of the director, Royal Bot. Gardens of Ceylon (1906-1909). 
> Supplement to the Official Gazette, F. M. S. Selangor Administrative report (1916-1917). 
© The Gardens’ Bulletin, Straits Settlements (1914-1916). 
4 Manual of Statistics of British North Borneo (1915). 
TEMPERATURE 
Hevea brasiliensis appears to reach its best development in 
regions having a comparatively high and uniform temperature 
throughout the year. At Belem (Para) near the mouth of the 
Amazon and about 1° south latitude the minimum temperature 
recorded during a period of three years was 20.2° C., and the | 
maximum, 36.6° C.; the average yearly maximum for this period 
was 32.04° C., and the average yearly minimum, 22.23° C. 
In the Philippines the lowest temperature recorded during a 
period of three years (19138-1915) at Davao was 19.0° C.; at 
Cotabato, 19.2° C.; and at Jolo, 20.2° C. During this period 
the maximum temperature at Davao was 36.0° C.; at Cotabato, 
36.0° C.; and at Jolo, 33.4° C. In general the temperature in 
the Mindanao region appears to range between about 20° and 
34° C, and is fairly uniform throughout the year, except for a 
somewhat warmer period during February, March, and April, 
when the temperature occasionally reaches 36° or 37° C. 
165559—4 * 
