PREFACE. 



THIS little treatise is designed to give full in- 

 formation and explanation of Colcord's method 

 and device for Preserving Green Forage; and 

 I have endeavored to write in plain, direct 

 language, so that all persons interested in the 

 subject may be able to readily understand and 

 work by this system without difficulty. 



The treatise is arranged to give our present 

 knowledge on its first pages ; then the means 

 pursued by which the knowledge was obtained; 

 the proofs, tests, experiments, progressive ex- 

 perience, theories, and certificates are given 

 later on. This arrangement necessarily causes 

 considerable repetition, as well as apparent 

 contradiction ; but, as much of the matter em- 

 braced in this treatise has been published from 

 time to time, as facts have been developed, I 

 prefer to reprint some of the original articles, 

 with the comments made by the press at the 

 time of their first appearance, remarking that 



