Foreword. 



The first and second editions of this little 

 book were so well received by educators all 

 over the country that we have concluded to 

 issue a revised edition giving the latest results 

 of our experience in the cultivation of rubber on 



LA ZACUALPA RUBBER PLANTA- 

 TION. 



The facts it contains, together with the 

 description of the country and conditions nec- 

 essary to the successful cultivation of rubber, 

 are given to the public so that the details of 

 this new and most interesting industry may be 

 more fully understood. 



Those who desire to increase their store of 

 knowledge are invited to give these pages care- 

 ful consideration. 



Since the first edition was issued rubber has 

 advanced in price, with every prospect of its 

 going higher, and the attention of the business 

 world is more than ever turned to this profit- 

 able industry. 



This book is dedicated to the young 

 people of our public and private schools, 

 with the hope that the matter it contains 

 will be found interesting as well as in- 

 structive. 



