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1:16 PM
(1) The Morgan Library catalog entry is not evidence one way or the other, since we do not know the circumstances of the production of the manuscript and the catalog entry. It is possible that the calligrapher simply copied the poem from the published text of A New Pilgrimage, including the heading "From the Arabic" and that the cataloguer has interpreted this as meaning "translated from the Arabic".
(2) Blunt's heading "From the Arabic" is also not dispositive, since this form of words is also commonly used for pseudo-translations. The most famous examples are Elizabeth Barret Browning's "Sonnets from the Portuguese" which are not translations of Portuguese originals.
(3) The discussion of el Bujairami fails to take account of his description "imitations and not translations" (my emphasis). The obvious way to interpret this is that, in this sentence at least, el Bujairami is contrasting "imitations" with "translations".
 
1:38 PM
@GarethRees For (1) and (2), I did already mention the counterpoints to those (fairly weak) pieces of evidence, including even the comparison with Browning's Sonnets from the Portuguese. For (3), I guess you are right and I missed the definitive placing of that phrase directly after the quotes from "The Camel Rider", so I'll probably have to edit again ... I do want to preserve the general points that a "translation" of poetry is often not a direct translation of meaning, though.
 
1:57 PM
For (1), I think that adding a note, to explain that the manuscript is by a third party and written 16 years after the poem's publication, would be fine. At the moment, if a reader doesn't follow the link, they might be left with the impression that the manuscript is Blunt's original for the poem, and if that were the case then it would be important evidence.
(2) I think is fine as you've written it
 
 
2 hours later…
4:03 PM
Otherwise, good answer!
 
 
2 hours later…
5:38 PM
I've been translating stuff and came up with this
 

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