GLOSSARY. 243 



Alkali, in common language, lye. 



Apotheme, extractive matter. 



Adjective colors, such as require a mordant 



Alizarine, the basis of the red coloring principle. 



Arable, fit for tillage or cultivation. 



Avidity, greediness, eagerness. 



Asboline, one of the elements of soot 



Botany, the science of plants. 



Boulder, a rounded fragment of rock lying on the surface. 



Blowpipe, an instrument used in chemical experiments. 



Bole, a species of reddish earth. 



Bitwnenization, the process of furnishing bituminous coal 



Biennial, once in two years. 



Biternate, twice ternate, two petioles, each bearing three 



leaves. 

 Barometer, an instrument for measuring the pressure of the 



atmosphere. 

 Base, the substance which combines with an acid to form a 



salt 

 Bed, a term used in Geology to denote the extent of a stratum 



of coal or other rock 

 Basalt, a dark green rock divided in columnsL 



Climatology, a treatise on climate. 



Caloric, the agent which produces heat 



Coalesce, to unite or run together. 



Condense, to make more dense. 



Clouds, floating particles of water or other matter. 



Congeal, to freeze or harden. 



Crystalization, the act of forming crystals. 



Concentric, having a common centre. 



Cohesion, the force which holds the particles of bodies together. 



Corona, a luminous circle round the sun or moon. 



Cleavage planes, the flat surface formed by the cleavage of 

 rocket. 



