Reactions to light in Planaria maculata with special reference to the function and structure of the eyes (1918)
Taliaferro, William Hay, 1895- · Baltimore · leaf 38
nd the one eliminated could be changed almost Instantlyby menas of a double throw switch (K, fig.l). Eachbeam of light was produced by a 125 watt gas-filledlamp (L,L*, fig.l) which was housed in a well ventilated,light-tight box and properly screened. Each of theseboxes was placed on a graduated… … jrigare 1.Diagram of apparatus for obeerving reactions of irlana-rla to a horizontal beam of light. A, aquarlua; B,Blamp boxes which can be movel toward and away from theaquarium; C,position of drawing board when camera luci-da was used; IL, double pole, double throw,knife switch;L,L,126 watt…
