BOTANICAL INVESTIGATION IN MIDDLESEX. 399 



was Samuel F. Gray's Natural Arrangement of British Plants, published in 

 1821. This valuable book has never attracted the attention it deserves; 

 it was strongly opposed and decried by the votaries of the Linnsean system, 

 and set aside by the English Flora of Sir J. E. Smith, arranged on 

 the Linnsean system, which appeared only three years afterwards, in 1821. 

 Gray's book is certainly superior to Dr. Lindley's Synopsis of the British 

 Flora, arranged according to the Natural Orders, printed in 1829, in the 

 preface to which it is deliberately ignored. 



Mr. Alexander Irvine, now of Chelsea, prepared a MS. catalogue of plants 

 noticed in the years from 1825 to 1834, within two miles of Hampstead 

 Heath. We have been kindly furnished by the author with this list, which 

 contains upwards of 600 plants, some of which, however, are certainly not 

 now to be met with. The same botanist published in 1838 The London 

 Flora, which, notwithstanding its title, includes the whole S.E. of England, 

 and even extends into the midland counties. Many original Middlesex 

 localities are given in this book, generally trustworthy. Mr. Pamplin, Dr. 

 Golding Bird, and Mr. Ealph contributed some of them. The Handbook of 

 British Plants, by the same author, published in 1858, has been found 

 useful. Mr. Irvine was among the first to pay special attention to introduced 

 exotics and naturalised species ; many of those found in our county were 

 first noticed by him. He also first recorded in Middlesex the occurrence 

 of Barbarea prmcox, Erysimum cheiranthoides, Lepidium ruderale, Sagina 

 ciliata, Anthemis arvensis, Myosotis ccpspitosa, Chenopodium hybridum, 

 Lemna trisulca, L. gibba, Carex binervis, Aira flexiiosa, and other commoner 

 species. 



In the Medical Botany of Dr. Stephenson and Mr. Churchill, published in 

 1828-31, there is in vol. iii., under tab. 105, a list of plants growing on 

 and near Hampstead Heath: 113 names are given; they are chiefly from 

 Martyn, Curtis, Blackstone, the Botanisfs Guide, and other previously pub- 

 lished books. 



The first volume of Mr. Hewett C. Watson's New Botanisfs Guide was 

 published in 1835. The list for ' Middlesex and London ' is in pp. 97-103. 

 In addition to Mr. Watson's own observations, many of Mr. Pamplin's are 

 here given, and the MS. notes of Mr. J. Winch in his copy* of the Flora 

 Britannka are entered. The second volume, published in 1837, contains at 

 pp. 586-589 a supplementary list of Middlesex localities. Several of these 

 were contributed by G. E. Dennes and E. Castles. Of the invaluable Cybele 

 Britannica by Mr. Watson we need not speak ; it is quoted systematically 

 throughout this Flora. Mr. Watson was the first to observe Biplotaxis 

 muralis, Cerastium arvense, (Enanthe Lachenalii, Filago spathulata, and 

 Allium oleraceum, in Middlesex. 



The Flora Metropolitana, by Daniel Cooper, was printed in 1836, between 

 the issue of the two A'olumes of the New Botanisfs Guide. It is ' the result 

 of numerous excursions, made in 1833, 1834, and 1835,' within thirty miles of 



* This book is in the library of the Linnaean Society. We have entered the MS. notes 

 from the original source. They refer to years bet. 1800 and 1830. 



