III.—BOTA N Y. 
Art. XXXVIL-—List of the Algw of the Chatham Islands, collected. by 
H. H. Travers, Esq., and examined by Professor John Agardh, of Lund. 
Communicated by Baron FERD. von Mvetter, C.M.G., M.D., F.R.S., 
Hon. Mem. N.Z.I. 
[Read before the Wellington Philosophical Society, lst September, 1873.] 
EanLY last year I was entrusted by Mr. H. H. Travers with a collection of 
Alge, obtained by him with a large number of other plants during his second 
visit to the Chatham Islands. I was glad to induce my friend Professor 
Dr. Agardh, of Lund, to undertake the laborious task of the examination of 
these Alge, as here, not only the Museum material for comparison of this kind 
of plants, but also the extent of our libraries for phycologic studies, are quite 
inadequate ; and besides the systematic determination requires great circum- 
spectness, many Algæ being of wide and much interrupted oceanic distribution. 
Moreover, no one could have brought to bear on this investigation the 
unrivalled experience of the great phycologist of Lund, gained after life-long 
special researches, which came to him as an inheritance from an illustrious 
parent. Dr. Agardh had already, at my request, examined the few Algæ 
brought by Mr. Travers from the Chatham Islands in 1864. The latter 
gentleman, encouraged by the well-proved discovery of a few new species on 
that occasion, effected last year a far more extensive search. The result has 
been that he brought together 46 genera and 62 species of these kinds of 
oceanic plants ; and it is further gratifying to observe that he thereby added 
now again 2 genera and 10 species to the New Zealand flora, and indeed to 
science. Of the whole series a list is appended, arranged in accordance with 
the sequence adopted in Dr. Hooker’s handbook. Diagnoses of the new 
generic and specific forms will soon be published in Sweden by Dr. Agardh. 
It is, however, not likely that Mr. Travers’ creditable exertions have 
already rendered known all the sea plants of this order occurring on the shores 
of the Chatham group ; on the contrary, it may be expected that settlers on 
the various islands, able to watch what the gales may cast ashore at various 
hoped that the enthusiastic young naturalist, to whom we mainly owe our 
knowledge of the vegetation of the Chatham Islands, will soon gain a new and 
fruitful field for a continuation of his. important exertions. 
