. Science . 75 68 Room Temperature, fahr. Fig. 3. Eelation between Room Temperatureand Average Difference between Inerease-in-Pulse-Eate-on-Standing after reclining at end of periodand similar increase at beginning of period. Elaborate psychological tests of color nam-ing, naming opposites, addition, cancella-tion, mental multiplication, typewriting andgrading specimens of handwriting, rhymedcouplets and prose compositions, all failedentirely to show any effect of even thesevere 86°—80 per cent, relative humiditycondition upon the power to do mentalwork under the pressure of a maximalefSciency
. Science . 75 68 Room Temperature, fahr. Fig. 3. Eelation between Room Temperatureand Average Difference between Inerease-in-Pulse-Eate-on-Standing after reclining at end of periodand similar increase at beginning of period. Elaborate psychological tests of color nam-ing, naming opposites, addition, cancella-tion, mental multiplication, typewriting andgrading specimens of handwriting, rhymedcouplets and prose compositions, all failedentirely to show any effect of even thesevere 86°—80 per cent, relative humiditycondition upon the power to do mentalwork under the pressure of a maximalefSciency test. Option tests of the inclina-tion to do work, in which the subjects hadthe choice of doing mental multiplicationor typewriting for pay, or of reading novelsor doing nothing, showed a distinct lessening in the total amount of work done in the hotroom while with male subjects whose votesas to comfort showed no preference for the68° over the 75° condition there was as. Fig. 4. Eelation between Eoom Temperatureand Average Systolic Blood Pressure of all sub-jects at end of day. much accomplished in the warm as in thecool room. We plan to repeat these experi-ments with women subjects who may prob-ably be more susceptible to slight degrees ofoverheating. The results with physical work (liftingdumbbells and riding a stationary bicycle)were much more definite. Again maximumeffort tests showed no appreciable influenceof room temperature, but when the subjectshad a choice they accomplished 15 percent, less work at 75° and 37 per cent, lessat 86° than at 68°. These conclusions arequite what one would expect. Under pres-sure efBcient work can usually be accom- Apkil 30, 1915] SCIENCE 629 plished even under unfavorable conditions,but as a matter of common experience wefind that the children in overheated school-rooms and the workers in overheated fac-tories are listless and inactive.
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