From the Journal, Asiatic Society of Bengal, Vol. LIX, Part II, No. 3 , 
1890 . 
Natural History Notes from H. M.'s Indian Marine Survey 
Steamer “ Investigator,” Commander R. F. Hosktn, R. N., Com¬ 
manding — No. 16 . The non-indigenous species of the Andaman 
Flora.—By D. Prain. 
[Received 28th February 1890; Read 2iid April 1890.] 
The non-indigenous element in a flora—the weeds of cultivation 
and the cultivated plants—species introduced, involuntarily or inten¬ 
tionally, by man—is not often dealt with apart, since weeds are rarely in 
themselves interesting, and because a local treatment is hardly satis¬ 
factory where cultivated forms are concerned. But the intrusion of 
this element is a subject of peculiar interest, particularly when it is 
possible to review it historically, and as opportunities for doing this are 
rare, it is well to make use of all that occur. 
The Indian convict settlement of Port Blair in the Andaman 
islands affords such an opportunity. This settlement was commenced 
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