GLOSSARY 293 



IGNEOUS. Produced in connection with great heat. 

 INBREEDING. The mating together of near relatives for a 

 number of generations. 



LARVA. The young of an insect after it has emerged from 

 the egg e.g., a caterpillar. 



MANTISES. A group of predatory insects. 

 MAXILLARY. Connected with the mouth parts. 

 MORPHOLOGY. The study of form and structure. 

 MUTATION. The sudden origin of a new species at a single 

 step. 



ORGANISM. A living creature. 



ORNITHOLOGIST. A student of birds. 



OVARY. In animals the organ which produces ova. In 

 plants the organ which contains the ovules. 



OVUM. The female gamete. 



OVULE. The structure surrounding the spore which gives 

 rise to the female gamete or ovum in the higher plants. 



PETAL. One of the (usually) coloured leaves composing 

 the corolla. 



PETALOID. Resembling the corolla, usually in the circum- 

 stance of being coloured. 



PHYSIOLOGY. The study of the functions of organisms. 



PIN-EYED. Having the stigma on a level with the throat 

 of the corolla, and the anthers lower down, enclosed within 

 the tube. 



PISTIL. The central organ of a flower, which contains the 

 ovules, and ultimately becomes the fruit, or the chief part 

 of it. 



POLLEN. Those spores of the flowering plants which 

 produce the male gametes. 



POLLINATION. The transference of pollen to the stigma of 

 a plant. 



PRIMARY, SECONDARY, AND TERTIARY EPOCHS. The three 

 great divisions of geological time during which the known 

 fossiliferous strata were deposited. 



RADICAL LEAVES. Leaves arising immediately from the 

 root-stock in the form of a rosette. 



