ANNOUNCEMENTS. 



As stated in our preface, the Leaf Key is not intended to take the place of a more 

 comprehensive manual or treatise on the trees, but rather to supplement such a work. 

 As information which we hope may be of interest to those who would go further in the 

 study of trees than the meagre outlines of this key, we mention in the following pages 

 our other publications on American trees and allied lines, to which we invite attention. 



They are taken up in detail as follows: 



PAGES 



HANDBOOK OF THE TREES OF THE NORTHERN STATES AND CANADA, 



Photo-descriptive 52-55 



AMERICAN WOODS, Illustrated by actual specimens 56-59 



Preparations of Woods for Stereopticon 60-61 



Preparations of Woods for Microscope 61 



Views of Typical Trees, their Leaves, Flowers, Fruits, Barks and Leafless Branch- 

 lets, both as Photographs and Stereopticon Slides 63 



List of species represented in the various Parts of American Woods, and in the 

 Preparations for Stereopticon and Microscope, in Views of Trees, etc., furnished on request. 



Address ROMEYN B. HOUGH COMPANY, LOWVILLE, N. Y. 



