_Was Andrew Marvell poisoned?_--I have just been reading the three ponderous quarto volumes comprising _The Works_ of Andrew Marvell, as collected and edited by his townsman, Capt. Edward Thompson of Hull. In the "Life," near the end of vol. iii., we are told that the patriot died on Aug. 16, 1678, "and by poison for he was healthful and vigorous to the moment he was seized with the premeditated ruin." And again, in a summary of his merits, we are told that "all these patriot virtues were insufficient to guard him against the jesuitical machinations of the _state_; for what vice and bribery could not influence, was perpetrated by poison." This heinous crime, so formally averred against the enemies of Marvell, may have been committed by "some person or persons unknown;" but, as not a tittle of evidence is adduced or indicated by the zealous biographer in support of the charge--Query, had it any foundation in fact? In the court, and out of the court, the anti-popish, anti-prelatical Puritan had enemies numerous and bitter enough; but is there really any other ground for the abominable imputation of foul play alluded to, beyond his actually sudden death? Is the hypothesis of poison coeval with the date of Marvell's demise? If so, was there any official inquiry--any "crowner's quest?" Surely his admiring compatriots on the banks of the Humber did not at once quietly sit down with the conviction, that _thus_ "fell one of the first characters of this kingdom or of any other." H. _Anonymous Pamphlet by Dr. Wallis_ (Vol. vii., p. 403.).--Will MR. CROSSLEY have the kindness to give the title of the anonymous pamphlet which, he informs us, was published by Dr. John Wallis {477} in defence of the Oxford decree of 1695, on the subject of the Trinity? TYRO. Dublin. _Mrs. Cobb's Diary._--Can any of your readers give me any information as to the following book, _Extracts from the Diary and Letters of Mrs. Mary Cobb_: London, printed by C. and R. Baldwin, 1805, 8vo., pp. 324.; said to be _privately printed_? JOHN MARTIN. Roxfield, Bedfordshire. _Compass Flower._-- "Look at this delicate flower that lifts its head from the meadow-- See how its leaves all point to the north, as true as the magnet; It is the compass flower, that the finger of God has suspended Here on its fragile stalk, to direct the traveller's journey Over the sea-like, pathless, limitless waste of the desert." _Evangeline_, Part II. IV. line 140., &c. Where can I find a description of this flower, and what is its scientific name? In Abercrombie's _Intellectual Powers_, p. 49. edit. 1846, I find the following passage: "The American hunter finds his way in the trackless forests by attention to minute appearances in the trees, which indicate to him the points of the compass." Can any one tell me what these "minute appearances" are? A. H. BATTIER. East Sheen, Surrey.