Leading English ornithologists having contributed to the work, some of the papers are extremely good, while in the plates, which are in Keulemans's best manner, many rare species of birds are figured, some of them for the first time.
But, though apparently without such a knowledge of the anatomy of birds as would enable him to apply it to the formation of that natural system which he was fully aware had yet to be sought, he seems to have been an excellent judge of the characters afforded by the bill and limbs, and the use he made of them, coupled with the extraordinary reputation he acquired on other grounds, procured for his system the adhesion for many years of the majority of ornithologists.'
But these works, locally useful as they may have been, did not occupy the whole attention of German ornithologists, for in 1791 Bechstein reached the second volume of his Gemeinnititzige Naturgeschichte Deutschlands, treating of the birds of that country, which ended with the fourth in 1795.
His attempt at classification was certainly better than that of Linnaeus; and it is rather curious that the researches of the latest ornithologists point to results in some degree comparable with Brisson's systematic arrangement, for they refuse to keep the birds-of-prey at the head of the Class A y es, and they require the establishment of a much larger number of " Orders " than for a long while was thought advisable.
This proved a great success, and his arrangement, though by no means simple, 5 was not only adopted by many ornithologists of almost every country, but still has some adherents.