PREFACE. xix 



a list of the summer birds of passage, the Latin names 

 which he uses are " Linnaei nomina;" in his correspondence 

 with Barrington, Letter I. and elsewhere, he designates 

 his birds, scientifically, by " Raii Nomina." Barrington 

 argued so warmly against the deficiencies of the Linnsean 

 characters, and advocated so strongly the excellences of 

 our countryman, John Ray, that he is carried on by the 

 discussion in which he was engaged to inquire, no doubt in 

 his estimation triumphantly, " After this comparison can 

 there be a doubt whether the English botanist should con- 

 sult Ray or Linnasus for an English plant ? " 



WILLIAM MARKWICK, who afterwards took the name of 

 Eversfield, derived from his residence in the country op- 

 portunities of observing nature, which he embraced with 

 a readiness worthy of a pupil of Gilbert White. His 

 " Naturalist's Calendar " affords ample evidence of his 

 perseverance in attending to and noting occurrences in 

 both the organized kingdoms of the creation ; and the 

 remarks subjoined by him, in numerous instances, to our 

 -author's " Observations on various Parts of Nature," show 

 him to have been a sensible as well as a diligent observer. 

 He communicated to the Linnean Society various essays 

 on subjects of interest to zoologists, which were published 

 in the earlier volumes of the " Transactions " of that body ; 

 the first of them, " On the Migration of certain Birds, and 

 on other Matters relating to the Feathered Tribes/' included 

 a table of the annual appearance and disappearance of 

 certain birds, which was continued to the end of 1794 in a 

 subsequent communication, entitled "Aves Sussexienses ; 

 or, a Catalogue of Birds found in the County of Sussex, 

 with Remarks." His last paper consisted of " Observations 

 on the Clover Weevil," and was published in 1801. His 

 death took place in 1813. 



DR. JOHN AIKIN is known both as the author of numerous 

 and popular productions, and as one of an eminently literary 

 and scientific family. He dedicated his " Calendar of 

 Nature" to his sister, Mrs. Barbauld, referring to her 



