..I • >l:l AM 



.Ml 



GERM 



Geoblast nn]. In 



biology, a plumule that in germination ris re the 



• Mini, lea ■ that <>t 



the ; 



Geoffroyu rench 



G. spin- 

 ulose and G. vermifuga 



Geogenous 1 ro- 



i plants as grow 

 ally 



Geographic Tongue im of 



th, • uh sinuous, rnap- 



tinate in its 

 bildren. 

 tropho ; 

 Geography . to 



irth's 

 with rel • and the distri- 



ility. 

 Geolin , oil]. A trade- 



lin. 

 Geology . earth; ■]. The 



of the structural development of the 

 th. 

 Geomalism earth ; 



a]. In organisms to ad- 



just thei if gravitation by sym- 



metric growth in horizontal plani 

 Geomaly - malism. 



Geometry .a measure]. 



• mathematic science that treats of the 



Geophagia bhagism. 



Geophagism earth ; ipayelv, to eat]. 



i eating or clay-eating; chthono- 



Geophagist , to eat]. 



iter. 

 Geophagous [;//, earth. , to 



eat]. dirt-eatii 



Geophagy See Geophagism. 



Geophilous . loving]. 



In !■ ertain snails. 



Georgia Bark ih ) [after King i , of 



I]. The hark of / .a tree 



1 to be febrifuge. Unof. 



Geotropic ' ik) \yfj, earth; Tpiireiv, to turn], 



■ .r turning toward the earth; exhibiting a 



u th. The roots of 



Geotropism rth ; 



tum]. I iid other 



vnward toward the earth. 

 Geotrop;. tropism. 



GephyTocercal bridge ; 



. tail]. In biology, applied t<> fishes in wh 



by tin.' union of the 



Geraniin geranium]. A pre- 



bill, Geranium 

 It stimulates and • diber 



es, etc. 

 I ■ i - . 1 ' i 



Geranium 



macula- 



and gallii acids. 



G., Ext., 



PTd. I I •-•■ rt\v z 



Geratic fer+al' ild age]. Relating to old 



Geratology (jer-al-ol'-o-Jf) L. '''■> '" 



speak]. That department of biology that treats "I 



the decadence and gradual extinction of a group of 



• irganisms. 

 Gerber's Food. A variet) of infantile milk food having 



the following composition: Water, 6.78; fat, 2.21 ; 



grape sugar and milk-sugar, 6.06 ; cane-sugar, 30.50; 



starch, 38.48 ; soluble carbohydrates, 44. 76 ; albumi 



noids, 9.56 '• ash. I.2I. 

 Gerdy, Fibers of. Sec Fibers. G., Ligament of. 



See Ligament. 

 Gerhardt's Sign. See Signs an, I Symptoms, Table of. 



G.'s Test. See Tests, Table of. G., Type Theory 



of, the molecules were considered as residues that 



remain unaltered in certain reactions. 



Gerlach's Ammonia-carmin. See Stains, Table of. 

 G.'s Carmin Mass, a warm-flowing mass for injecting 

 sues. Dissolve 5 gm. of carmin in a mixture of 4.CC 

 <>i water and 0.5 c.c. of ammonia. Allow the solution 

 tn stand several days, and mix with S parts of a solution 

 of gelatin, I to 2. filler and inject at a temperature 

 of40°C. G.'s Network, or Plexus, an exceedingly 

 delicate fibrous network of the finest nerve fibrils in 

 gray matter of the cord. G.'s Theory, pertains 

 to the connection of the nerve fibers and ganglionic 

 cells of the cord. G.'s Tubal Tonsil, a granular con- 

 dition sometimes noticed at the orifices of the Eusta- 

 chian tubes in chronic inflammations in this region, 

 and due to swelling of the muciparous glands of the 

 tube. G.'s Valve, the fold of mucous membrane that 

 -urrounds the mouth of the vermiform appendix. 



Gerlier's Disease. An affection (of farm-hands) charac- 

 terized by sudden paroxysms of ptosis, vertigo, mus- 

 cular paresis, and cervico-occipital pain. ases, 

 Eponymic Table 



Germ (jer»/) [L., germen, sprig, offshoot, em- 

 bryo]. In biology, (a) a portion of matter potentially 

 vital and having within itself the tendency to assume 

 a definite living form (Harvey); a spore, a seed, an 

 embryo, (b) A microbe or bacterium. G.-area, 

 the germinal area, the germinal disc, area germinativa, 

 the spot on an ovum where the development of the 

 embryo begins. G., Asexual, or Unisexual. See 

 Parthenogenesis, Germ-plasm, Evolution, and Repro 

 duction. G.-band, in embryology, one of the bands 

 that unite to form the primitive streak. G.-cell. 1. 

 The germinal vesicle in a non-fertilized ovum. 2. The 

 ovum that has been impregnated, but which is still a 

 single cell; a cytula, or a blastomere ; a simple sphere. 

 also Heredity. G., Dentinal, a tooth-papilla, or 

 tooth-pulp. G. of Disease, the special virus orspore 

 through which a disease becomes communicable. G.- 

 disc. See G.-area. G. Epithelium, cylindric cells 

 on the surface of the median plate of the mesoblaM . 

 G. -flesh. See Sarcophyte. G. -gland, a germ produ 

 cing gland ; an ovarj oi a testicle. G.-history, ontog 

 G. -layer, in biology, anyone of the mem 

 branesof a developing germ, as the blastophylla, epibt 

 mesoblast, hypoblast, endoderm, ectoderm, mesoderm, 

 somatopleure , splanchnopleure. G. -plasm, in biolog) , 

 a term introduced by Weissmann to indicate the repro- 

 ductive or hereditary substance of living organisms. 

 It is held to contain all tin- primarj constituents of the 

 entire organism; it is never produced neogenetically, 

 but is ever passed on from the germ-cell in whi< h art 

 organism originates in direct continuity to the germ 

 Is of succeeding gen It causes the pro 



duction of the new individual by directing the proi 

 of division in ontogeny, in the course of which it be 

 comes 1 hanged in a regular manner. It is compo 

 primarily of biophores (a. v. 1 or beajrers of vitality, the 

 1 units that exhibit vital fori ' I *>angenil 



