It remains that I make a grateful mention of such of our learned and wor­thy Friends, as have given us any considerable information or assistance; as well to do them right, as to acquaint the Reader whom we mean by some names recorded in this Work. Those were Sir Thomas Brown of Norwich before remembred: Francis Jessop Esq of Broom-hall in Sheffield Parish, Yorkshire, who sent us the Descriptions and Cases of many rare Birds, and discovered and gave us notice of many Species thereabout, which we knew not before to be native of England: Sir Philip Skippon of Wrentham near Bliborough in the County of Suffolk, Knight, who communicated the Pictures of several Birds we wanted: And Mr. Ralph Johnson of Brignal near Greta Bridge in Yorkshire, a Person of singular skill in Zoology, especially the History of Birds, who besides the Descriptions and Pictures of divers uncommon, and some undescribed both Land and Water-fowl, communicated to us his Method of Birds, whereby we were in some particulars informed, in many others confirmed, his judgment concurring with ours in the divisions and Characteristic notes of the Genera.