ACTIVITIES COMMON TO ALL ANIMALS. 31 
VOCABULARY. 
Anat’omy (Gr. ava, up, and 
temno, cut), the science which 
treats of the structure of organ- 
isms. 
Bi ol’o gy (Gr. dios, life, and logos, 
a discourse), the science of living 
things, 
Bot’a ny (Gr. dofania, a plant), 
that part of Biology which treats 
of plants. 
Car’bon (Lat. carbo, coal), an ele- 
ment found in all organic com- 
pounds; charcoal, graphite, and 
diamonds are forms of this ele- 
ment. 
Car’bon di ox’ide, a heavy, color- 
less gas, formed by the breathing 
of animals and by the burning 
of substances containing car- 
bon. 
Ex cre’tion (Lat. ex, out, and cer- 
no, separate), the act of throw- 
ing off waste matters from the 
body. 
Func’tion (Lat. fungor, execute), 
the action of any part or organ of 
a plant or animal. 
His tol’o gy (Gr. Azstos, a web, or 
tissue, and /ogos), the study of 
minute anatomy. 
Hy’dro gen (Gr. Aydor, water, and 
Gignomai, be born), a colorless, 
gaseous element forming a part 
of water. 
In or gan’ ic, not organic. 
Mag ne’sium (Gr, Magnésios, a 
district in Thessaly), a silver- 
white, solid, metallic element. 
Mat'ter (Lat. materia, stuft), any- 
thing having extension. 
Ni'tro gen (Gr. witron, nitre, and 
gignomai), a colorless, gaseous 
element composing four fifths of 
the air. 
Nu tri’tion (Lat. xutrio, feed), a 
series of processes by which liv- 
ing things maintain their life and 
growth by appropriating food. 
Or gan’ic (Gr. organon, an organ), 
pertaining to plants and animals. 
Ox i da’tion, the process of uniting 
chemically with oxygen. 
Or’gan ism, a living plant or ani- 
mal. 
Ox’y gen (Gr. oxys, sharp, and 
gignomat), a colorless, gaseous 
element, forming one fifth of the 
alr. 
Phys i ol’o gy (Gr. physis, nature, 
and Jogos), the science which 
treats of living things. 
Zo ol’o gy (Gr. zoon, an animal, 
and /ogos), that part of biology 
which treats of animals. 
