Movements of cylinder slow and tentative with but little repetition.
Position indicative of but slight strain.
Rob. (Mr. B. P. Robins), a trained subject.
Breathing spots rarely symmetrical or perfectly defined.
rλ and Δr almost invariably determined with one inspiration.
Movements of cylinder slow and tentative with but little repetition.
Position indicative of but little strain.
Rog. (Miss L. R. Rogers), a partially trained subject.
Breathing spots rarely symmetrical or very well defined.
rλ and Δr usually determined with 2 or 3 inspirations.
Movements of cylinder slow with much repetition.
Position indicative of but slight strain.
Se. (Mr. W. B. Secor), a trained subject.
Organ : Sensitivity somewhat higher on the right side as a rule.
Postero-lateral half of left breathing spot usually very small or
missing as with N. Spots ill-defined.
rλ and Δr usually determined with 2 or 3 inspirations, movements of cylinder slow with some repetition.
Position indicative of strain.
Sk. (Dr. Stella E. Sharp), a trained subject.
General physical condition neutasthenic.
Organ easily exhausted.
Right breathing spot usually larger than left, edges of both spots clearly cut.
rλ and Δr usually determined with one inspiration, movements of cylinder slow with little repetition.
Position indicative of much strain.
T. (Dr. Ellen B. Talbot), a trained subject.
Organ somewhat easily exhausted. Portions of both lower turbinal
bones removed to prevent congestions of mucous in the upper passages. Sensitivity somewhat higher on the left side.
Breathing spots well rounded and clearly cut. Secondary divisions
imperfect. (When the nasal passages were clear the division was
represented only by indentations at the edges of the spots.)
rλ at first determined with one inspiration ; later in the work, with 2, 3, or even 4 as a more satisfactory procedure. Δr usually determined with 2 or 3 inspirations.
Movements of cylinder very slow and cautious with much repetition.
Position indicative of but little strain.
In the notes just given a subject is called “trained” if he had had a fair amount of experience in general introspection. Only Be. had had any training in smell experiments before the beginning of the course described in this paper. Some months earlier we bad made a futile attempt to find his difference-limen with the weaker Utrecht cylinder of gutta-percha and gum ammoniac by the method of minimal changes. A subject is called “partially trained” if he began psychological laboratory-work about the time when these experiments commenced. The word “repetition” is used in connection with the manipulation of the cylinder to denote the moving backwards and forwards at the limen.
The breathing spots of all the subjects varied much from day to day. Sometimes they were broken up into several hands, always running rather from front to back than laterally. Often one narrow
