74 



A GLOSSARY OF TERMS 



GRA'IOTLE. A diminutive grain. 



GRA'PHITE. fr. gr. grapho, I writeT 

 A mineral composed of carbon 

 and iron, constituting -carburet of 

 iron. It is known as plumbago, 

 and black lead; it is used in the 

 manufacture of lead-pencils. 



GRAU'WACKE, and GRAYWACKE. 

 Ger. Grey rock. A name given 

 to some of the older shales in the 

 geological series, and also to the 

 sandstones that accompany them. 



GRA'YEL. Small rounded stones va- 

 rying in size from a small pea to 

 a walnut, or something larger. 



GRAVE'OLENB Lat. Having a strong 

 odour. 



GRAV'ITATE. fr. lat. gravis, heavy. 

 To tend towards the centre of the 

 earth, as all bodies do from their 

 weight. 



GREGA'RIOUS. fr. lat. gregarius, of a 

 flock ; formed from grex, gregis, a 

 flock or herd. Going in flocks or 

 herds. 



GREEN SAND. A formation of thecre- 

 ta'ceous group, (p. 70, Book viii). 



GREENSTONE. A tough variety of 

 trap-rock, consisting chiefly of 

 hornblende. 



GRES BKJAHHE. Fr. A fine-grained 

 solid sandstone, sometimes white, 

 but more frequently of a red, 

 blue, or greenish colour. It is the 

 same as hunter sandstein. 



GRIF'FIN. fr. lat.gryphus, fr. gr.gru- 

 pos, curved, hooked. (A fabulous 

 monster, half lion, half bird.) The 

 systematic name of a tribe of 

 birds of prey. . ; *. 



GRILLO-TAL'PA. fr. lat. grilus, a 

 cricket; talpa, a mole. Mole- 

 cricket. 



GRIT. A coarse-grained sandstone. 



GROOVED. Marked with grooves ; 

 furrowed, channelled. 



GROSSIFICA'TION. The swelling of 

 the ovary of plants after fertili- 

 zation. 



GRU'MOUS. fr. lat. grumus, a clot. 

 Clotted j collected into granular 



masses, as the fecula in the stem 

 of the sago-palm. 



GHUND'STEIN. Ger. Greenstone or 

 diorite. 



GRUN'NIENS. Lat. Grunting like a 

 hog. 



GRUS. Lat. A crane. 



GMT'LLUS, or GRILI.US. Lat. A 



cricket. 



GRY'PHEA fr. gr. grupos, incurved. 

 A genus of fossil bivalves. 



GRY'PHITE LIMESTONE. A marl, so 

 called from containing gry'phea. 



GRY'PHITENKALK:. Ger. A name 

 sometimes given to zechstein. (p. 

 49, Book viii). 



GRY'PHITES. Generrc synonym of 

 the productus aculeatus. (p. 49, 

 Book viii). 



GHY'PHUS. Lat. A Griffin. 



GUENON. Fr. An ape. 



GULO. Barbarous Lat. The glutton. 



GUM. A vegetable product which 

 is tasteless and inodorous, and is 

 distinguished by being soluble in 

 water and insoluble in alcohol. 



GYMNOCA'RPOUS. fr. gr. guwmot, na- 

 ked ; karpos, fruit. Applied to a 

 form of fruit, which is not dis- 

 guised by the adherence of any 

 other organ than the calyx. 



GYMNODON'TES. fr. gr. gumnos, na- 

 ked ; odous, odontos, a tooth. Syste- 

 matic name of a family of fishes. 



GYMNOSPE'RMIA. fr. gr. gumnos, na- 

 ked ; sperma, a seed. Name of a 

 Linnsean order of plants. 



GYMNOSPE'RMOUS. fr. gr. gumnos, 

 naked ; sperma, a seed. Having 

 naked seeds. 



GYMNO'TI. Lat. plur. of gymnotus. 



GYMNO'TCS. Lat. The generic 

 name of the electric eel. 



GYNJECE'UM. fr. gr. gimeikeion, the 

 woman's part of the house. The 

 pistil: the female system of plants, 

 comprising the ovary, the style, 

 and the stigma. 



GYNA'NDRIA. fr. gr. gune, a wo- 

 man ; aner, a man. A class of 

 plants, (p. 102, Book vii). 



