CONTENTS 
SIXTH LETTER. 
Days Spent With Profit in Selangor 80 
Rubber Plantations at Klang; Distance of Planting ; Age 
at Which Hevea Trees Yield; The Labor Question; Ihe 
Chinese as Rubber Planters; The Selangor Rubber 
Company ; Return to Singapore and Departure for 
Hong Kong. 
ISTHMUS OF TEHAUNTEPEC 
FIRST LETTER. 
On the Way to the Land of the Castilloa 95 
The Mining City of Zacatecas ; Queretara Where Maxi- 
milian Was Executed; Mexican Opals; The Eternal Snows 
of Popocatepetl and Ixtaccihuatl ; From the City of Mex- 
ico to Achotal; Experiences at the Latter Town; First 
Sight of Cultivated Rubber. 
SECOND LETTER. 
Prosperous Private Plantations Ir 5 
Careful Study of the Situation Proved to Investors that 
Rubber Would be More Profitable than Coffee; Results 
of Planting in Favorable and Unfavorable Conditions ; 
Continual Tapping Showed Latex Given Out by All 
Trees; Knowledge of Climatic Conditions Neces- 
sary to Successful Planting; La Junta; The 
Laborers. 
THIRD LETTER. 
A Grasp on the Rubber Planting Situation • H 0 
Clearing and Burning by Contract; Danger from hires; 
Gathering Castilloa Seeds; Costly Seed Failures; Ihe 
Journey to Coatzacoalcos ; Morning Glory Vines ; The 
Problem of Tapping and Preparing for Market. 
FOURTH LETTER. 
Across the Isthmus • 04- 
Views of Many Plantations; Vast Tracts of Land Needing 
Only Irrigation to Make Them Valuable; Mexican Laws; 
Animals and Insects of the Temperate Zone ; Manner in 
Which Plantations are Taxed; The Cow Pea and \ el- 
vet Bean Which Should Receive the Attention of 
Rubber Growers. 
