![]( brmedchirj271630-0042){#sp1 .34}

![]( brmedchirj271630-0043){#sp2 .35}

![]( brmedchirj271630-0044){#sp3 .36}

![]( brmedchirj271630-0045){#sp4 .37}

![]( brmedchirj271630-0046){#sp5 .38}

![]( brmedchirj271630-0047){#sp6 .39}

![]( brmedchirj271630-0048){#sp7 .40}

[^1]: Read at a meeting of the Bath and Bristol Branch of the British Medical Association, held at Bristol on October 30th, 1912.