146 



GLOSSARY. 



mathematics, a statement of a truth 

 to be proved theorem, or of an 

 operation to be performed pro- 

 blem. 



Pros-(Gr. irpos, pros, towards). A 

 preposition in compound words, 

 signifying towai'ds or near. 



Prosec'tor (Lat. pro'seco, I cut off). 

 An anatomist ; one who dissects th'e 

 body for a lecturer on anatomy. 



Prosencephal'ic (Gr. -n-pos, pros, 

 near; tyKtfyaXov, enJceph'alon, the 

 brain). Seated before the brain. 



Prosen'chyma (Gr. -n-pos, pros, to- 

 wards; e'7xujua, en'chuma, a tissue). 

 Vegetable tissue formed of spindle- 

 shaped cells, generally applied 

 closely together. 



Pros'ody (Gr. irpos, pros, to ; wSr), 

 ode, an ode or singing). The part 

 of grammar which treats of the 

 quantity of syllables, and of the 

 laws of versification. 



Proster'nmn (Gr. irpo, pro, before ; 

 ffrepvof, ster'non, the breast). The 

 lower half of the anterior division 

 of the thorax in insects. 



Pros'thesis (Gr. irpos, pros, to ; 

 TiOri/jLt, tithemi, I place). In gram- 

 mar, the adding of one or more 

 letters to the beginning of a word. 



Pro'tein (Gr. irpotros, prntos, first). 

 A substance consisting of oxygen, 

 hydrogen, carbon, and nitrogen, 

 produced by the action of alkali 

 or acetic acid on albumen, fibrin, 

 and casein. 



Proth'esis (Gr. irpo, pro, before; 

 riOtjfj.1, tithemi, I place). See 

 Prosthesis. 



Protho'rax (Gr. irpo, pro, before ; 

 6(apa, thorax, a breast-plate). 

 The anterior segment of the thorax 

 in insects, bearing the anterior 

 pair of legs. 



Protich'nites (Gr. irpuros, protos, 

 first ; ixvos, ichnos, a footstep). 

 Imprints of the feet of early fossil 

 animals. 



Proto-(Gr. irpcoros, protos, first). A 

 prefix used in compound words, 

 signifying first ; frequently em- 

 ployed in chemical nomenclature. 



Pro'toplasm (Gr. trpwros, protos, 

 first ; Tr\a<Tcra}, plas'so, I form). 



The material which appears to be 

 concerned in the early formation of 

 simply organised bodies. 



Protox'ide (Gr Trpwros, protos, first; 

 oxide). The degree of oxidation 

 which possesses the most strongly 

 marked basic properties. 



Protozo'a (Gr. irpcaros, protos, first ; 

 coov, zoon, an animal). The 

 lowest division of the animal king- 

 dom, consisting of creatures of very 

 low organisation, apparently occu- 

 pying a neutral ground between 

 animals and vegetables. 



Protozo'ic (Gr. -rrpwros, protos, first ; 

 faov, zoon, an animal). In geology, 

 applied to the strata containing the 

 earliest traces of animal life. 



Protrac'tile (Lat. pro, forward ; 

 tra'ho, I draw). Having the power 

 of lengthening or drawing out. 



Protu'berance (Lat. pro. before; 

 tu'her, a bunch or knob). A pro- 

 minence. 



Prox'imate (Lat. prox'imus, nearest). 

 Nearest ; proximate principles are 

 those compounds which exist ready 

 formed in animals and vegetables, 

 as albumen, casein, sugar, gum, 

 starch, &c. 



Pruri'go (Lat. pru'rio, I itch). An 

 eruptive disease of the skin, accom- 

 panied by much itching. 



Prus'siate (Prussia acid). A term 

 formerly given to supposed com- 

 pounds of prussic acid with bases, 

 but now known as cyanides of 

 metals. 



Prus'sic. A name sometimes given 

 to hydrocyanic acid. 



Pseud- or Pseudo- (Gr. iJ/euSos, 

 pseu'dos, a falsehood). A prefix in 

 some compound words, signifying 

 false or counterfeit. 



Pseudomor'phous (Gr. 

 pseu'dos, a falsehood ; 

 morphe, form). Not having the 

 true form ; applied to minerals, 

 the form of which has not been 

 derived from true crystallisation. 



Pseudosper'mous(Gr. ^evSos, pseu'dos, 

 falsehood ; 0-rrep/ji.a., sper'ma, seed). 

 Having single-seeded fruits resem- 

 bling seeds. 



Psoas (Gr. *J>oa, psoa, the loin). A 



