PSYCHOLOGY: W. R. MILES 
705 
times in the previous series, made him feel uncomfortable for the rest 
of the day. 
For the detailed technique of the various measurements used ref- 
erence must be made to the careful description by Dodge and Benedict. 
There were but few minor changes in procedure since it was the inten- 
tion to repeat the measurements of the first series with the same appa- 
ratus and as nearly the same conditions as practicable. In outhne the 
experimental cycle was as follows: (1) Preliminary adjustments; plac- 
ing of the electrodes for electrocardiograms from body leads; taking 
of data concerning the subject's general condition. (2) Patellar re- 
( flexes stimulated by two pendulum hammers of known weight; sepa- 
ration interval 0.5 seconds, latency and amplitude recorded from the 
thickening of quadriceps muscle. (3) Sensory threshold for Faradic 
stimulation measured in j8-units, method of Martin. (4) Reaction 
time in reading isolated 4-letter words these being the same set of 24 
words that was previously employed. (5) Finger movements, a modified 
form of the tapping test recorded photographically. (6) Voluntary 
tetanus designed to produce rapid fluctuations in the pulse rate. (7) 
Memory test for series of twelve 4-letter words. The same lists of words 
were used on each day and in the same order. (8) Eye reaction to 
peripherally appearing stimuli, photographically recorded. (9) Eye 
movement speed and accuracy in looking successively at marks sepa- 
rated by 40 degrees. (10) Protective lid reflexes stimulated by two sharp 
noises, separation interval 0.5 seconds, the photographic record being 
the shadow of the eyelash movement. (11) Pulse records (electro- 
cardiograms from body leads) each approximately 15 seconds in length. 
Eleven such records were taken during each experimental cycle. 
At the beginning of the second experimental period the subject drank 
the dose for the day, i.e., either the alcohol mixture or the control mix- 
ture. Then followed the patellar reflexes and other measurements in 
rotation as outlined. These were repeated in the same order in each 
experimental period. Theoretically, for purposes of comparison, the 
periods on the experimental days should be equal in number and length, 
but this ideal of regularity is hard to attain. During the six days, how- 
ever, there was no accidental interruption which caused the omission of 
any measurements or enforced a delay of more than ten minutes for the 
adjustment or repair of apparatus. To complete a period required 
about one hour. This was approximately twice as long as the periods 
employed by Dodge and Benedict as in their series all of the measure- 
ments were not made on the same day. 
In addition to providing for an equal number of normal and alcohol 
