Attempts to derive the anacromyodian and the katacromyodian from the diacromyodian condition are easy on paper, but quite hopeless when hampered by the knowledge of anatomical facts and how to use them.
It hampered the Brethren's progress in Germany, and explains the smallness of their numbers there.
But the new system was unsuited to the Mahratta genius; it hampered the meteoric movements of the cavalry, which was obliged to manoeuvre in combination with the new artillery and the disciplined battalions.
A still more serious blow was the destruction of the relief army which Levenhaupt was bringing to Charles from Livonia, and which, hampered by hundreds of loaded wagons, was overtaken and almost destroyed by Peter at Lyesna after a two days' battle against fourfold odds (October).
Carrying on the work from the anatomical point at which he had left it, correcting his errors, and utilizing to the fullest extent the observations of Keyserling and Blasius, to which reference has already been made, Muller, though hampered by mistaken notions of which he seems to have been unable to rid himself, propounded a scheme for the classification of this group, the general truth of which has been admitted by all his successors, based, as the title of his treatise expressed, on the hitherto unknown different types of the vocal organs in the Passerines.