trumous one, nor any of the intermediates.
These have been discussed chiefly by Dr. Mahomed in the memoir
alluded to above.

In the large experience I have had of sorting photographs, literally
by the thousand, while making experiments with composites, I have
been struck by certain general impressions. The consumptive patients
consisted of many hundred cases, including a considerable proportion
of very ignoble specimens of humanity. Some were scrofulous and
misshapen, or suffered from various loathsome forms of inherited
disease; most were ill nourished. Nevertheless, in studying their
portraits the pathetic interest prevailed, and I returned day after
day to my tedious work of classification, with a liking for my
materials. It was quite otherwise with the criminals. I did not
adequately appreciate the degradation of their expressions for some
time; at last the sense of it took firm hold of me, and I cannot now
handle the portraits without overcoming by an effort the aversion
they suggest.

I am sure that the method of composite portraiture opens a fertile
field of research to ethnologists, but I find it very difficult to
do much single-handed, on account of the difficulty of obtaining the
necessary materials. As a rule, the individuals must be specially
photographed. The portraits made by artists are taken in every
conceivable aspect and variety of light and shade, but for the
purpose in question the aspect and the shade must be the same
throughout. Group portraits would do to work from, were it not for
the strong out-of-door light under which they are necessarily taken,
which gives an unwonted effect to the expression of the faces. Their
scale also is too small to give a sufficiently clear picture when
enlarged. I may say that the scale of the portraits need not be
uniform, as my apparatus enlarges or reduces as required, at the
same time that it superposes the images; but the portraits of the
heads should never be less than twice the size of that of the Queen
on a halfpenny piece.

I heartily wish that amateur photographers would seriously take up
the subject of composite portraiture as applied to different
sub-types of the varying races of men. I have already given more
time to perfecting the process and experimenting with it than I can
well spare.

BODILY QUALITIES.

The differences in the bodily qualities that are the usual subjects
of anthropometry are easily dealt with, and are becoming widely
regis