80 HISTORY OF BOTANY. 



(pod-bearing plants), which numbers at least 6500 species, 

 we find the greatest diversity in qualities and effects. There 

 is scarcely a purpose for which we use vegetation to which 

 this order does not contribute : — for fodder we have clover 

 and vetches ; for human food peas and beans in great 

 variety; for ornament we tolerate in our gardens the 

 laburnum, a deadly poison; among dye-stuffs we have 

 indigo, red saunders, &c. ; tanning materials, divi-divi, &c. ; 

 gums, Arabic, tragacanth, &c. ; medicine, senna, — and so on 

 we might go for pages ; for such differences may be found 

 in most of the larger orders, and where there is great 

 uniformity, as in the Crucifers and Mallows, it is rather a 

 curious exception than a general rule. Of Lindley's other 

 works may be mentioned the following : — ' Monograph on 

 Roses,' 1820, with drawings executed by himself, followed by 

 works on several other special subjects. His ' Introduction 

 to the Natural System' appeared in 1830, and afterwards 



* Elements of Botany,' 'Figures of Plants,' 'Introduction to the 

 Study and Physiology of Plants,' ' School Botany,' ' Medical 

 Flora,' &c. He devoted much attention to Orchids, and 

 also made a study of fossil Botany, on which he wrote a 

 work. Besides all this he was for many years editor of the 



* Botanical Register,' and from its commencement edited the 

 horticultural part of the ' Gardeners' Chronicle.' Further 

 he was Professor of Botany in University College, London, 

 from 1829 to 1860, when he resigned; he was also lecturer 

 on Botany at the Royal Institution, and at the Apothecaries' 

 Garden, at Chelsea, was secretary of the Horticultural 

 Society, and edited their ' Transactions ' and ' Proceedings.' 

 He was a Fellow of the Royal, Linnean, and Geological 

 Societies.* He died in 1865. 



" In his ' Introduction to Botany,' 3rd ed., 1839, Lindley incident- 

 ally mentions his herbarium as containing 30,000 species ; those who 

 have collections of dried plants will understand how much labour this 



