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The old manservant read on again: "The pterylological characters of Photodilus seem not to have been investigated, but it has been found to want the tarsal loop, as well as the manubrial process, while its clavicles are not joined in a furcula, nor do they meet the keel, and the posterior margin of the sternum has processes and fissures like the tawny section."
The number of the caudal and sacral vertebræ vary; as does the number of the ribs, together with their relative breadth and the presence of processes. The size and shape of the apertures in the sternum are highly variable; so is the degree of divergence and relative size of the two arms of the furcula.
The number of the caudal and sacral vertebrae vary; as does the number of the ribs, together with their relative breadth and the presence of processes. The size and shape of the apertures in the sternum are highly variable; so is the degree of divergence and relative size of the two arms of the furcula.
The size and shape of the apertures in the sternum are highly variable; so is the degree of divergence and relative size of the two arms of the furcula. The period at which the perfect plumage is acquired varies, as does the state of the down with which the nestling birds are clothed when hatched. The shape and size of the eggs vary.
The description of the treatment of this fracture seems, however, to indicate that the catena gulae of Roger and Gilbert is what we call the clavicle, though the more common Latin names of this bone are claviculus, furcula, juglum or os juguli.
He read about the construction and habits of the owl: "In the tawny, or brown, owl there is a manubrial process; the furcula, far from being joined to the keel of the sternum, consists of two stylets, which do not even meet; while the posterior margin of the sternum presents two pairs of projections, with corresponding fissures between."
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