GLOSSARY 315 
Bo’ téblast : 50. 
Ec'téderm: 20. 
Eigg-cell : 20. 
Egois'tic instinct : 129, 
Embryélogy : 39. 
Embrydniic : 49, 
Enn'ddblast : 50. 
En'doderm: 20. 
Environment : an organism’s surroundings taken collectively. 
Ex’cretory: referring to excretion, as excretory organs, the organs 
which get rid of waste matter in the animal body. 
Fau'na (fawna) : 157. 
Fertilized egg: 20. 
Fiis'sion: 4. 
Flagél'la: 13, 
Function: 37. 
Gn’ glion (pl. ganglia): a nerve-center composed of an aggregation of 
nerve-cells, 
Gas'trula: 50. 
Gém'mule: 20. 
Generalization: 41, 
Gédl'ogist: student of the structure and history of the earth. 
Gréga'rious: 87. 
Growth: 46. 
Habit: 139. : a 
Herbiv orous: plant-eating. 
Heréd'ity ; 54. 
Hermiphrodit'ic: 35. 
Hiberna'tion: passing the winter in a death-like sleep. 
Homogé'neous: of the same composition or structure throughout. 
Tleum: 42. 
Inorganic: not being nor having been a living organism ; not organic. 
Insectiv’orous: insect-eating. 
Instinct: 128. 
Intellect : 139. 
Intercél'lular: outside of and between the cells. 
Jeju'num: 42. 
