vi PREFACE. 



safety applied to a tropical plant and under tropical 

 conditions. 



A sugar literature is now springing up, and it is 

 hoped that this little book may be one of a series 

 of hand-books, each dealing in a more exhaustive 

 manner than in the present case with some one 

 branch of the sugar industry. If a number of com- 

 petent writers could be induced to contribute to 

 this end, such a course would do much to give 

 accuracy and precision in the place of the old 

 "rule of thumb." 



FRANCIS WATTS. 



Government Laboratory, Antigua, W. I., 

 November, 1892. 



