The two species above alluded to which were not figured in the first edition, are _Tuber æstivum_ and _Helvella esculenta_. The former must have been inadvertently omitted by Dr. Badham, as it has long been known as abundant in certain parts of England. _Helvella esculenta_, although alluded to by Dr. Badham, was not at that time known to be a British species. It has since been observed near Weybridge in Surrey, where it occurs almost every spring. The plant figured in Pl. XV. fig. 6 of the first edition under the name of _Lycoperdon plumbeum_, is not that species, but _Lycoperdon pyriforme_; it will be found at Pl. VIII. fig. 5. Dr. Badham states that all puff-balls are esculent, but, judging from the smell of _Lycoperdon pyriforme_, I should much doubt whether it would make an agreeable dish. _Lycoperdon plumbeum_ is now better known as _Bovista plumbea_, and _Lycoperdon Bovista_ as _Lycoperdon giganteum_. There is some confusion about the synonymy of the plants described by Dr. Badham as _Agaricus prunulus_ and _Ag. exquisitus_. It is unnecessary to discuss the matter here, and I have thought it not desirable under the circumstances to alter Dr. Badham’s nomenclature. They appear to be described in Mr. Berkeley’s work as _Ag. gambosus_, Fr., and _Ag. arvensis_, Schœff. Dr. Badham’s observations on the spores of Fungi must be read in connection with the note added by him at the conclusion of the work; and to those who are interested in that part of the subject I should recommend the perusal of the seventh chapter of Mr. Berkeley’s ‘Outlines of British Fungology,’ and Tulasne’s recent work, ‘Selecta Fungorum Carpologia.’ Mr. Cooke, in his ‘Plain and Easy Account of British Fungi,’ recently published, mentions some species as esculent which are not noticed in this work. I have however no experience of their qualities, and must refer the reader to Mr. Cooke’s book for further information. He mentions Mr. Berkeley as an authority for considering _Agaricus rubescens_ as suspicious; but, from long experience, I can vouch for its being not only wholesome, but, as Dr. Badham says, “a very delicate fungus.” F. C. PREFACE TO THE FIRST EDITION. TO THE RIGHT REVEREND THE LORD BISHOP OF NORWICH. MY LORD, I had two reasons for desiring that this humble performance should appear under the sanction of your Lordship’s name. Nothing could be more favourable to a Treatise on any department of Natural History, than the approval of one who has been so eminently successful in his cultivation of the same field. But it is with much greater confidence that I dedicate a work, whose chief object it is to furnish the labouring classes with wholesome nourishment and profitable occupation, to a high functionary of that kingdom, which is distinguished from all others by recognizing the claims and furthering the interests of the poor. I have the honour to be, my Lord,