PREFACE. 



rflHE first and second volumes of this work dealt 

 respectively with "Buds and Twigs" and with 

 " Leaves/' and in each case it was incumbent on me to 

 invent a special scheme of classification by means of 

 which the reader should be able to identify our native 

 and commonly introduced Trees and Shrubs in the 

 Winter or at other seasons when they are devoid of 

 Flowers. 



Indeed Volume I., on " Buds and Twigs/' is essentially 

 and particularly a book for the Winter-study of Trees, to 

 enable the student to recognise even deciduous woody 

 plants by such marks as the leaf-scars, bud-scales, position 

 and structure of buds, and so forth. Volume II., on 

 " Leaves/' on the other hand, is concerned entirely with 

 the study of foliage, and especially at periods when, as in 

 Spring arid Autumn, or at ages when the tree is still too 

 young to bear flowers and fruit, the characters of the 

 leaves and other vegetative organs are alone available 

 for diagnosis. 



In the present Volume, the third of the series of six 

 of which this work will consist, I have designed what may 

 be regarded as emphatically a book for the Summer. 



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