59 
private collector. A. Loher, formerly of Manila, worked over 
many localities. The only large collection made in recent years 
for any outside institution was that obtained by R. S. Williams 
for the New York Botanical Garden. Two other private col- 
lectors, who have done important work, are Father M. Vanover- 
bergh in northern Luzon, and Mrs. Mary Strong Clemens in the 
Lanao district of Mindanao. 
.Nearly all of these have visited Mount Mariveles at the en- 
trance to Manila Bay, the Benguet hill region, and Los Bafios 
at the base of Mount Maquiling, on Laguna.de Bay. Other 
mountains from which much has been obtained are Pulog, Data, 
Tapulao and the Banajao range, in Luzon; Halcon in Mindoro; 
Apo, Malindang, and the hills near Zamboanga in Mindanao; 
Canlaon and the Cuernos peaks in Negros; and Giting-giting 
on Sibuyan; while districts of varying elevation more or less 
carefully explored are the Batanes and Babuyanes Islands at 
the extreme north of the Archipelago; Polillo east of Luzon; the 
northeastern part of Rizal Province, and Sorsogon, in Luzon; 
parts of Palawan, Mindoro, and Leyte. Less extended investi- 
gations have been made in very many places. 
Districts where little or nothing has been done, and from which 
much may reasonably be expected, are the northeast of Luzon, 
the Polis range in northern Luzon, Mount Isarog in southern 
Luzon, Samar, the northeastern and eastern coast of Mindanao, 
Matutum in Mindanao, several parts of Palawan, and the chain 
of islands connecting Jolo with Borneo. 
In general, the work of exploration presents no great difficulty. 
The climate is good, insect pests are negligible except the ants, 
there is nothing to be feared from larger animals, and transporta- 
tion is becoming easier. B 
