Eyes and Veins.--The angle of the eyes to the middle line of the face is an aid to identity; this will show whether the equator of the eye is on a plane at a right angle to the middle line, or above or below it. Tamassia lays much stress upon the arrangement of the veins on the back of the hands, which is an individual characteristic and one which is not easily altered or likely to be. By compressing the arms with a ligature the veins are made to stand out in relief and the backs of the hands are photographed. Other Peculiarities.--The identity of the accused may be further proved by the absence or malformation of the =teeth= corresponding with a bite on the party assaulted, or the impression of the teeth on soft articles like cheese. Peculiarities of dentistry may be useful in identification. Or it may be proved that the wound inflicted could only have been made by a left-handed person, or in a manner peculiar to those engaged in the slaughtering of animals--_e.g._ is the cut from within outwards, as employed by butchers? The correspondence in the size and peculiarities of the foot of the prisoner and the =footprints= found in the vicinity of the crime is important as evidence. There is considerable difference of opinion as to the size of a footprint on the ground, Mascar of Belgium asserting that it is _smaller_ than the foot that made it, Caussè, on the contrary, that it is usually _larger_. It should be borne in mind that the size of the footprint varies in running, walking, and standing, being smallest in running and largest when the individual is standing, which may account for the difference of opinion of the two observers just mentioned. This fact should always be borne in mind when an examination is required to be made of the footprints in the neighbourhood of the crime. A mark in the footprint showing that the sole of the boot had been patched, or in the case of the naked foot that there was some deformity of the toes, would of necessity be important. The mark of the naked foot smeared with blood has, in several cases, led to the identification of the culprit. Photographs may be used as a means of identification. Casts of footprints may be taken by smearing the print carefully with oil, and pouring in liquid plaster of Paris, or by dusting it over with powdered paraffin wax, and then melting it by holding a hot iron over the print; this may be repeated until a sufficiently thick cast is obtained. Hot solution of gelatine in water, mixed with oxide of zinc and glycerine to the requisite consistence, may be used for the purpose.