HISTORY OF ESSEX BOTANY. 231 Turner apparently records only five plants from Essex, viz. :— Eryngium maritimum L. Althaea officinalis L. Linum catharticum L. Crocus sativus L. Cochlearia anglica L. His account of the saffron (p. 284) is worth quoting :— " It is plentifully manured in Fields in Essex and Cambridgeshire: Safron Walden takes her name from its growing there ; it begins to flower in September, and presently after the leaves shoot forth and abide green all the Winter, dying again in April, when it puts forth another Crop of Flowers, which must be gathered as soon as it is blown, or else it is lost ; so that Jack Presbyter for covetousness of the profit can reach his Sabbatarian conscience to gather it on Sunday ; and so he can to do any thing else that redounds to his profit, though it destroy his Brother." A second edition of the Botanologia appeared in 1687, when, however, it had been superseded by a work of a far higher order.43 Two years after the first edition, appeared the Pinax verum naturalium Britannicarum of Dr. Christopher Merrett. Pulteney devotes a chapter44 to Merrett, or Merret as he spells it, and there was not much for the present writer to add when preparing the notice for the Dictionary of National Biography.45 Merrett, whose father and son bore names' identical with his own, was born at Winchcombe, Gloucestershire, February 16, 1614. In 1631 he entered Gloucester Hall (now Worcester College). Oxford, two years later migrated to Oriel, graduated B.A. in 1635, M.B. in 1636, and M.D. in 1643. He then came to practice in London, becoming F.R.C.P. in 1651, and Gulstonian lecturer in 1654. In the same year he was appointed, on the nomination of his friend William Harvey, the discoverer of the circulation of the blood, as "Musei Harviani Custos," a post he retained until 1666, and took a lease of the house belonging to the Royal College of Physicians at Amen Corner for twenty pounds. His rent was remitted in "recompence for his pains for looking after the new library," and Harvey in his deed of gift in 1656 assigned £20 per annum for the librarian. In 1657, and in seven years subsequently to that date, Merrett acted as Censor to the College, and he was one of the first fellows of the Royal 43 For all that is known of Robert Turner see Dict. Nat. Biog., vol. lvii., p. 354. 44 Op. cit., vol. i., chap. 22, pp. 290-7. 45 Vol. 37, pp. 288-9.