GERMAN 



;> 1 5 



GIAN'J ISM 



of De Vries, physiologic units ol Herbert Spencer, 

 plastiduUs of Elsberg, and plasomes <>l Wiesner.) 

 These biophorcs unite into groups i ailed determinants 

 ((j. v.), each of which is a primarj constituent "I a 

 cell. Groups ol determinants in turn combine to fi 

 ids (Cf. ancestral germ-plasms), which correspond to 

 tin- small granules hitherto called micro-somata (a 

 The ids again form groups called idants (a. v.), which 

 correspond with the chromat i rod-like 



granular masses of chromatin in the nu G.- 



plasma, the protoplasm oi the ovum oi germ, sup 



posed In determine the chai ofl 



spring; the physical basis ol hereditj and of the 



conservation of the species. Its alleged unchange 

 ableness is called "the immortality ol the germ- 

 plasma." See Protoplasm. G. -plasms, Ancestral, 

 \\ eismann's term for bodies of a highly complex con 

 stitution, each containing all the primary constituents 

 that are necessary to the formation of an organism 

 (" Ahnenplasmen " ), afterward supplanted by the 

 word id, </. v.). G.-pore, in cryptogamic botany, 

 a simple pit in the coat of a spore or an 

 that serves as a place of exit for the tubular out- 

 growths from the spore at the time of germination 

 (De Bary). G.-sac, the vesicle constituting the 

 blastoderm of mammals. G., Specific, same as 

 Germ. G. -theory, the doctrine of the origin of every 

 organism from a germ or germ-plasm \ bla 

 as distinguished from /. . or spontaneous gen- 



eration. Also the doctrine that certain diseases are de- 

 pendent upon the presence of certain microorganisms. 

 G.-tube, in cryptogamic botany the filamentous growth 

 of a spore upon germination. G. -vesicle. See 

 Germinal I esicle. 



German (jer'-man) \Germanus, German]]. Pertaining 

 or belonging to Germany. G. Breast-tea, a decoc- 

 tion of althea, </. v. G. Black. Same as Frankfort 

 Black. G. Chamomile. See Matricaria. G. 

 Disease. Synonym of In/Iitiiiza. G. Ichthyol. 

 See Thiol. G. Measles. See Rubeola. G. 

 Method, the oral method of instruction for deaf- 

 mutes. G. Tinder. See Amadou. 



Germander {Jer-man'-der, or jer f -man-der) [ME., 

 germawnder, germander]. A popular name for plants 

 of the labiate genus Teucrium. T. chamcedrys, of 

 Europe, is a popular polychrest remedy. T. narum 

 is diaphoretic, tonic, and emmenagogue. Unof. 



Germarium (j'er-ma'-re-um) \_germen, germ]. In 

 biology, applied to the ovary of certain in vertebrates. 



Germicidal ( jer' '-mis-i-dal) [germen, a germ ; cadere, 

 to kill]. Destructive of germs. 



Germicide (jer'-mis-id) \_germen, germ; ccedere, t<> 

 kill]. A microbicide ; an agent that destroys germs. 



Germiculture {jer'-mekul-chur) \_germen, germ; cul- 

 tures, culture]. The artificial culture of bacteria. 



Germifuge (jer'-mif-iij) [germen, a germ; fuga 

 banish]. I. Having the power of expelling germs. 

 2. An agent that expels germs. 



Germinal (jer'-min-al) [germen, a germ]. Pertain- 

 ing to a germ or the genesis of a tissue or organ. G. 

 Area, the Area germinativa, or embryonal shield, a 

 white round spot upon one side of the vitelline mem- 

 brane in which the blastoderm becomes double. G. 

 Disc. See Disc. G. Matter. See Protoplasm. G. 

 Membrane, the blastoderm. G. Spot, the nucleolus 

 of the ovule. G. Vesicle; (a) the blastosphere or 

 blastodermic vesicle ; (l>) a lacuna in the substance of 

 the germ; (<•) the imperfectly formed germ cell in the 

 embryo-sac previous to fertilization. Cf. ystis. 



Germination (Jer-min-a' -shun) [germinatio, sprouting, 

 budding]. In biology, the development of an embryo 

 from the ovum. Sprouting of a seed or spore. 



Germule (jerS-mtil) [germen, a germ]. An inci] 



"Mil , 



Gerocomia, or Gerocomy 



" , old man ; h\ 



gienic and medii al can "I old pei 

 Gerocomium i / r-o-ko' '-me-um) [, ■ , old man; 

 Ko/ieiv, to care for]. A home or institution for 

 iple. 

 Geromarasmus ( jer-o-m 



i wasting] . I Imai iation and 

 characteristic ol extn mi old 

 Geromeninguria . old 



ami , membram 



idition in which the urini tins men 



shreds. 

 Geromorphism Izm) [, 



form ). I id repitude of the cutam 



appearance of age in a young pen 



Geroni speciosa > [I-]. 



Andean plant, having a local reputation 

 tor syphilis and rheumatism. I nof. 



Gerontoxon 



Geropigia i jer-o-pij 1 -e-ah) \_Port.\ 

 i anil colored mixtui 

 used in adulterating and fortifying «:■ 



Gerst's Method. •■ of. 



Gestation -ta'-shun) [gestati to bear]. 



Same as Pregnancy. G., Abdominal, (he forn 



tra-uterine gestation in which the product of con- 

 ception i- I in the abdominal cavity. G., 

 Double, i. Twin pregnancy, i. The coexistenci 

 uterine and extra uterine pregnancy. G., Ectopic. 

 Same as (/., Extra-uterine. G., Extra-uterine, 

 pregnane) in which the product of t not 

 contained in the uterine cavity. G.. Dorsal, the 

 hatching of eggs on the back, as occurs in certain 

 batrachians, e. f. , the Surinam toad, G., Mammary 

 or Pouch, the completion of growth in a pouch, as in 

 marsupials. G., Oral, applied to the hatching of eggs 

 in the mouth, as occurs in some fishes. 



Geum ( fe / -um). Si - 



Gheel System (gil sis' -tern) [from Gheel, a town in 

 Belgium]. The colony-plan of housing, boarding, 

 and treating the insane, which prevail? at Gheel, in 



1 lelgium. 



Giacomi's Method. A method of staining the bacil- 

 li^ of syphilis. See Stat . eof. 



Giacomini's Method of Preserving the Brain. Im- 

 merse the brain in a saturated solution of chlorid of 

 zinc ; turn several times daily and inject 6oo grms. of 

 the liquid through the carotids. Remove the mem- 

 branes in |& hours. Allow the brain to remain in the 

 solution until it I i sink, then immerse in alcohol 



for io days. Immerse in glycerin until it sinks ; 

 remove, allow to dry, and varnish. 



Giampetro-Lowenberg Method. A method of intro- 

 ducing the Eustachian catheter. The catheter is 

 passed into the pharynx, and the beak is then turned 

 toward the opposite tube and the catheter withdrawn 

 until it catches on the posterior edge of the septum 

 nariuin, when it i- rotated in the opposite direction 

 through an arc of at least jSo° into the tube which it 

 is desired to catheterize. 



Giant ( ji'-ant) [yiyac, large or ponderous]. An adult 

 of a species excessively developed in stature and pro- 

 portions. G.-cell. See Cell. G. Pelvis. - 



formities of. G. -powder. See Dualin. 

 G. -swelling. S and Urtica- 



ria tuberosa. G. Urticaria. See Urticaria aa- 

 tosa. 



Giantism [ji'-an-tizm) [yt'yac, large]. Excessive over- 

 growth ; the quality of being gigantic. Gigantbm. 



