*

INDEX

A

ACINETA MYSTACINA, amoeba catches and devours an, 50.

ACTINOPHRYS, power of differentiation in A. Eichornii, 7;
Brachionus captured by, 7;
uric acid crystals and sand grains in an experiment with, 9;
taste in, 9;
sight in, 11;
memory of locality in, 49, 52;
lying in wait for, and devouring the young of, a _pythium_, 49;
love of pastime in, 123;
death-feigning by, 201;
effect of alcohol on, 219.

ADELOPS, homing sense in blind, 196;
author's experiments in demonstrating homing sense of blind, 196.

ALBINISM, axolotl affected by, 182;
difference between etiolation and, 182, 184.

ALCIOPE, eyes of, 17.

ALGA, stentor feeding on spores of, 47.

AMOEBA, young acineta caught by, 51.

ANEMONE, Romanes' experiment with, 42;
death-feigning by, 205.

ANERGATES, parasitic, 156, 157.

ANGLEWORM, differentiation between light and darkness by, 54;
experiments with light on, 55;
ocelli of, 55;
Darwin's theory as to deafness in, 55;
organs of audition in, 56;
author's experiments with, 56;
conscious choice in, 56;
taste in, 56, 57.

ANT, memory of locality in the, 62;
memory of friends (kindred) in the, 65;
Huber's observations, 66;
author's experiments with _Lasius niger_, 66;
claviger beetles recognized and petted by, 73;
gray matter in the brain of, 99;
nerve-cells and nerve-filaments in the brain cortex of, 99;
Lubbock's experiments (chloroform and alcohol) with, 99;
sympathy evinced by, 100;
parental care of worker ants for young, 103;
love of amusement in the, 125;
author's observations of _L. flavus_, 125, 126;
_Claviger foveolatus_ fondled by, 126;
Huber's observations of _pratensis_, 125;
Lubbock's observations of _Beckia_, a pet of, 126;
author's observations of _Podura_ in the nests of _F. fusca_ and
_F. rufescens_, 126;
evidence of reason in the, 152;
funeral of an, 153;
battle between, 153;
author's verification of Huber's experiment with slave, 155;
degeneration in, 155;
Lubbock's summary of degeneration in, 156;
homing sense in the, 197;
death-feigning in the, 212.

ANTHROBIA, eyeless, 11.

APE, cat affectionately treated by an, 83.

APHIS, ants domesticate the, 73.

ARGIOPE, mason wasps for food prefer the spider, 170.

ATROPIA, sympathetic nerves paralyzed by, 191.

AXOLOTL, color-changing in, 184;
Paul Bert's experiments with, 184;
Semper's experiments wit