PREFACE. 



IN the compilation of this Manual of Botany, the object has been 

 to give a comprehensive, and, at the same time, condensed view of 

 all departments of the science. Attention is directed, first, to the 

 Elementary structure of plants, and the functions of the simplest 

 tissues, and then to the Compound organs, and the functions which 

 they perform. In the consideration of these subjects, the works of 

 Jussieu and Henfrey have served as a model. The application of 

 Physiology to Agriculture, both as regards the cultivation of plants 

 and their diseases, is brought under notice; the works of Liebig, 

 Miilder, and Johnston having been consulted. In the important 

 subject of Classification, much aid has been derived from the standard 

 work of Lindley. The system adopted is that of De Candolle, but 

 in the arrangement and definition of the natural orders, Walker 

 Arnott has been chiefly followed. Many important hints have been 

 derived from Henslow's excellent Syllabus, as well as from the sys- 

 tematic work of Endlicher. In detailing the properties of plants, 

 care has been taken to notice all those which are important in a 

 medical and economical point of view Christison, Royle, Burnett, 

 and Lindley, supplying valuable data. In the chapter on the Geo- 

 graphical distribution of plants, a very general view is given of the 

 principal facts brought forward by Meyen, Schouw, Humboldt, Berg- 



