IV PREFACE. 



Indian specimens presented to me in 1829 by the 

 late Dr. Wallich, which led to my commencing a 

 Fern Herbarium, that first received a special addi- 

 tion in the form of a collection of Jamaica Perns, 

 collected in that island by Mr. Robert Heward. 



In 18il I purchased a set of the great collection 

 of Ferns made in the Philippine Islands by Mr. Hugh 

 Cuming ; of them I drew up a list, published in 

 Hooker's " Journal of Botany." I then wrote a 

 Memoir, entitled, "An Arrangement and Definition of 

 the Genera of Ferns," which was read before the 

 Linnajan Society, and published in Hooker's " Journal 

 of Botany for 1841-42." In 1842 Hooker and Bauer's 

 " Genera Filioum " was completed, wherein I described 

 twenty new genera. 



Collections of dried specimens were occasionally 

 placed in my hands for naming, among which may 

 be mentioned Schomburgh's "Ferns of British Guiana," 

 published in Hooker's " Journal of Botany " for 1842. 

 The "Ferns of New Zealand," in Dr. Hooker's "Flora 

 of New Zealand," in 1854. Ferns collected during 

 the voyage of the surveying ship " Herald " by Dr. 

 Seemann, contained in the volume of the Botany of 

 that voyage in 1854. I also drew up a list of the 

 great collection of Ferns made in India by Drs. 

 Hooker and Thomson. 



