...of many animals to creep into cracks and crevices has nothing to do with self-concealment, but only the necessity of bringing the body on every side in contact with solid bodies." 1 It is obvious that in natural condition it would be quite sufficient to feel something all round...

...ascidians, worms, and mollusks established many things about these low forms well worth knowing, — and that could have been learned in no other way — •...set them moving about. Wingless plant-lice, he says, can at any time be made to grow wings by simply lowering the temperature, or by letting the plant upon...

...many animals to creep into cracks and crevices has nothing to do with self-concealment, but only with the necessity of bringing the body on every side in contact with solid bodies." Crucial experiments in which the instinct was reversed were performed with a number of marine animals...

...many animals to creep into cracks and crevices has nothing to do with selfconcealment, but only with the necessity of bringing the body on every side in contact with solid bodies." But this investigator also points out that in many cases instinctive action is complicated by the influence...

...these things, and many others that Loeb has found out by his ANIMAL BEHAVIOR AND THE NEW PSYCHOLOGY laboratory experiments, throw much light on the springs...Loeb has shown that neither experience nor volition play any part in the behavior of bugs and worms; they are machines set going by outward conditions....

...these things, and many others that Loeb has found out by his laboratory experiments, throw much lighten the springs of animal life. It is not an instinct...Loeb has shown that neither experience nor volition play any part in the behavior of bugs and worms; they are machines set going by outward conditions....