determining factor?

Similar questions may, of course, arise in connection with other
subdivisions.

It must, indeed, be conceded that objective methods can reveal but
indirectly and with uncertainty the inner mechanism which produces any
association and that in any given instance it would be impossible to
establish the correctness of grouping in accordance with such

methods. However, to decide that question for any given reaction is
really not necessary in practice, since an error made through wrongly
placing one, two, or three reactions tinder any heading is of no
significance; the types acquire importance only when represented by
large numbers in a record under consideration; and when many reactions
fall tinder a single heading the likelihood of error, as affecting the
record as a whole, is by that fact alone greatly reduced.

The whole question might more profitably be approached from another
point of view: To what extent are the distinctions of this
classification useful? An answer to this question can be found only in
the results.



Sec. 7. ANALYSIS OF PATHOLOGICAL MATERIAL


We present in Table IV, the results of a statistical examination of
the records obtained from certain groups of normal subjects and from