GRIDIRON 



152 



GRYPTES 



antimony. G. copper=A. native sulphide of 

 copper. 6?. wacfce=Grauwacke. G. hound: 

 a variety of the 

 dog remarkable for 

 swiftness. 



Gridiron pendulum, 

 One in which the 

 rod is compound, 

 being composed of 

 several alternate 

 rods of brass and 

 steel, the expan- 

 sions of which, 

 by heat, or contrac- 

 tions from cold, Greyhound, 

 counteract each other, so that the pendulum 

 is always of the same length. 



Griffon, (griffon). [The French name.] A 

 popular name for several varieties of the 

 dog, and also for several birds, especially of 

 Vulture gryphus and Martinet noir. 



Grilse, (grils). The intermediate stage of 

 salmon; the young salmon, v. Salmon. 



Grimaldi. A walled plain in the moon more 

 than 100 miles in diameter. 



Grinders, (grin'derz). [A.-S. grindan, to 

 grind.]=Grinding-teeth=.Molars: teeth with 

 broad crowns, and two or three fangs, adap- 

 ted for crushing and grinding food. 



Grindstones, Varieties of sandstone, chosen 

 for their hardness and roughness. 



Grison, (gris'on). [The French name.]=Silver- 

 haired monkey = Viverra vittata ; also= 

 Mustela barbara. 



Grisly bear Ursus ferox. v. Ursus. 



Grisue, (gris'l). [Gristl, the A.-S. word.] A 

 firm, white, elastic tissue resembling bone, 

 but soft; also called Cartilage. 



Grit, (grit). [A.-S. grytt, sand.] A common 

 name for hard varieties of sandstone. 



Groats, (grawts). [Grats, the A.-S. word.] 

 The seeds of corn, the outer skin being 

 removed. Embden G. ^Crushed G.: from 

 which oatmeal is obtained. 



Groin, (groin). 1. The lower portion of the 

 abdomen. 2. The curve formed by the in- 

 tersection of arches. 



Groined. Formed by the intersection of 

 several arches. 



Groin-well, ,(8 rom ' we l) := Lithospermum : a 

 plant belonging to Boraginacetc. 



Grosbeak=Coccothraustes vulgaris: a bird be- 

 longing to Fringillidae. 



Gros, (gros). G.'s base 

 =Platindiaminine. G.'s 

 salts: compound salts 

 of platinum and am- 

 monia. 



Grossales, (gros-sa'lez). 

 [Grossulariaceae, q.v.] 

 Plants with dichlaray- 

 deous polypetalous flow- Grosbeak. 



ers, pulpy fruit with numerous small seeds, 

 forming a division of Epigynous Exogens. 



Grossbeak=Grosbeak, q.v. 



Grossulariaceae, (gros-su-lu-ri-a.'se-e). [L. gros- 

 sulus, unripe fig] ^Currant- worts: shrubs, 

 sometimes spiny, with axillary flowers; be- 

 longing to Grossales. 



Orouse 



Grossularia, (gi-os-su-LVri'a). A pale variety 

 of garnet: also called grossularite. 



Grotto of cheeses. A grotto, formed by basal- 

 tic eruptions, between Treves and Coblentz. 



Ground (grownd). G. 6ear=Ursus arctos. G. 

 /to0=Aard-vark, q.v. G. iv#=Nepeta glec- 

 horna. G. nwts=Arachis hypogaja. G. pearl 

 =Ant eggs: minute bodies found in collec- 

 tions of shells. G. pine=Ajuga chamaepitys. 

 G. tackle=Anchor and fittings. 



Ground nut oil=Oil of seeds of Arachis 

 hypogaea=Arachidic acid. 



Groundling, (grownd'ling)=Cobitis taenia: a 

 fish belonging to Cyprinidae. 



Groundsel, (grownd'sel). [Grundswilige, the 

 A.-S. name.]=Senecio vulgaris: an herb be- 

 longing to Asteraceae. 



Grouse, (grous)=Tetrao: a poultry-like bird, 

 belonging to Tetra- 

 onidae. Ruffled G.= 

 Bonasia. 



Grove's battery. A 

 galvanic battery, 

 consisting of plates 

 of zinc in dilute sul- 

 phuric acid, and 

 plates 'of platinum 

 in strong nitric 

 acid, which absorbs 

 the hydrogen evol- 

 ved by the action of the battery: this is a 

 powerful but not constant battery. 



Grove's gas battery. Plates of platinum, 

 partly in sulphuric acid, and partly in 

 oxygen and hydrogen alternately : when 

 connected as in a galvanic battery a current 

 passes along the connecting wire from the 

 oxygen to the hydrogen. 



Growth, (groth). [A.-S. groican, to grow.] 

 Increase in size: the early stage of develop- 

 ment, which essentially requires addition. 

 v. Evolution. Q. of coral: Madrepora, a 

 quick growing coral, has been known to 

 gr,ow 3 inches per year for sixty years. 



Grub, (grub). [A.-S. grafan, to dig.] Cater- 

 pillar=Larva of holometabolic insects, v. 

 Larva. 



Gruidse, (gru'i-de). [Grus, <?.v.]=Cranes : a 

 family of birds belonging to Cultirostres. 



Grus, (grus). [The Latin name ]=1. Crane: 

 a wading bird, belonging to Grallatores. 2. 

 The Crane: a constellation of the southern 

 hemisphere. 



Gryllidae, (gril'i-de). [Gryllus, q.v.] Crickets, 

 grasshoppers, &c. : family of insects belong- 

 ing to Orthoptera. 



Gryllotalpa, (gril-lo-tal'pa). [Gryllus and 

 Talpa, Q.i'.]=Mole-cricket: an insect belong- 

 ing to Orthoptera. 



Gryllus, (gril'lus). [The Latin name.]= 

 Cricket, grasshopper, &c. : an insect, the 

 type of Gryllidae. 



Gryphaea, (grif-e'a). A kind of oyster, of 

 which many species are found fossil in 

 Secondary rocks. 



Grvphite Umestone=Lias: on account of the 

 number of shells of the Gryphaea found in it. 



Gryptes, (grip'tez). G. HrMtefti=sBiYr cod 

 of New Zealand. 



