GLOSSARY. 729 



Gemmation. Budding a process of reproduction in which a bud 

 forms on the parent organism, and finally separates as a distinct 

 being. 



Globulin. A form of albumin insoluble in pure water but soluble in 

 weak solutions of common salt. 



Glomerulus. A bundle of capillary loops which form part of the 

 Malpighian body of the kidney. 



Glycocholic acid. An acid existing in large quantities combined 

 with soda in the bile of herbivorous animals, and in lesser quanti- 

 ties in man. 



Glycogen. Animal starch ; a substance belonging to the carbohy- 

 drates, which is made in the liver. It may be readily converted 

 into grape sugar from which fact its name is derived. 



Gustatory. Pertaining to the sense of taste. 



Hsematin. A dark-red amorphous body containing iron ; obtained 

 from the decomposition of the coloring matter of the blood 

 (hsemoglobin). 



Haemin. Hydrochlorate of hsematin ; easily obtained, as small dark 

 crystals, by boiling blood to which some common salt and gla- 

 cial acetic acid have been added. 



Holoblastic. The form of ova the entire yolk of which enters into 

 the process of segmentation. 



Homoeothermic. Even temperatured a term applied to those ani- 

 mals that keep up a regular temperature, independent of their 

 surroundings warm-blooded animals. 



Hyaloid. Glass-like ; a name given to the delicate membrane in- 

 closing the vitreous humor. 



Hydrocarbons. Compounds of carbon and hydrogen. Fats, though 

 containing oxygen in addition, have been considered as hydro- 

 carbons. 



Hypermetropic. A term applied to eyes in which the focus of par- 

 allel rays of light lies beyond the retina ; also called long sight. 



Hypertrophy. Increased growth from excessive nutrition. 



Hypoblast. The undermost of the layers of the blastoderm, from 

 which the pulmonary and alimentary tracts and their glands 

 are formed. 



Inhibition. A checking or preventive action exercised by some 

 nervous mechanisms over nerve corpuscles and other active 

 tissues. 



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