45 
at a distance from the subject and gradually approach him 
till he hears the test words. 
Test with a Watch .— Ascertain the normal distance the 
particular watch can be heard by examining several persons. 
The subject closes his eyes and puts his finger in one ear, 
the watch is brought towards the clear ear from a distance 
at which it is not heard to the point at which its ticking is 
just perceived. The distance between this point and the 
ear is then measured and recorded. This observation should 
be repeated two or three times. The second ear is then 
tested in a similar manner. Care should be taken to see that 
the subject keeps his eyes closed throughout the test. 
J. G. G. 
(c.) Smell . 
For this no positive rules can be given.—Note whether 
any particular odours are disliked or enjoyed. Can they 
distinguish individuals in the dark by smell, as is said to be 
the case with some races ? Can fires be smelt at great 
distances ? 
J. B, 
(d.) Touch . 
The subject having closed his eyes, apply the points of an 
ordinary mathematical compass to different parts of the body, 
varying the interspace between them so as to ascertain the 
minimum distance, for each part of the surface tried, at which 
the two points cease to be felt as one. 
J. B. 
