Points from Foregoing Letters

    Abstract

    PROF. H. A. HARRIS puts forward the view that the even-toed ungulates are not so highly specialized as would appear to be the case in view of the reduction of the digits to two and the absence of a clavicle. In the sheep embryo, a clavicle appears and various additional digits in the fore and hind foot. These are rapidly lost, either by absorption as in the case of the clavicle, or by incorporation in the neighbouring bony elements. The second and fifth metatarsals are buried in the substance of the rapidly growing third and fourth, which fuse to form the cannon bone.

    Rights and permissions

    Reprints and Permissions

    About this article

    Cite this article

    Points from Foregoing Letters. Nature 138, 934 (1936). https://doi.org/10.1038/138934b0

    Download citation

    Comments

    By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.