250 GLOSSARY. 



Gelatinous, containing gelatine. 



Homogeneous, of the same nature, consisting of similar parts, 

 all alike in structure. 



Hornblende, a simple mineral of dark green or black color. 



Humid, moist, wet 



Harmattan, a dry easterly wind in Africa. 



Haziness, foggy, smoky, misty. 



Horizon, the line where the earth and sky appear to meet. 



Hydrogen, a gas, the lightest of all known bodies. 



Hues, tints, colors. 



Hurricane, a violent storm or tempest. 



Halo, a circle appearing around the sun, moon, or stars. 



Hypothesis, a supposition or theory assumed but not proved : 

 used for the purpose of argument. 



Hexagonal, six sided : having six sides and six angles. 



Hydracid, an acid formed by the union of a substance with 

 hydrogen without oxygen. 



Hematoxyline, the coloring principle of logwood. 



Hydrate, a compound containing water. 



Humic acid, an acid obtained from humus. 



Herbaceous, herb-like, not woody. 



Herbarium, a book in which dried plants are preserved. 



Imbibe, to take in, absorb. 



Irrigation, the act of watering, moistening. 



Incineration, the act of reducing to ashes. 



Intersect, to meet and cross each other. 



Isoincric, bodies which differ in properties but agree in com- 

 position. 



Inter stratified, stratified between or among other bodies. 



Infusible, that cannot be fused or melted. 



Incas, inhabitants of Peru and some other parts of S. America. 



Inf. ate, to blow up, fill with wind. 



Isothermal lines, lines which pass through points on the sur- 

 face of the earth at which the mean temperature is equal. 



