POTENTIA 



430 



PRAXIXOSCOPE 



daily. P. Xanthate, P. Xanthogenate, KC,H 5 S 2 0, 

 light-yellow crystals, soluble in water or alcohol, ob- 

 tained from carbon disulfid by action of an alcoholic 

 solution of potassium hydrate. It is used as an in- 

 secticide. Syn., P. ethyldithiocarbonate ; P. ethyl- 

 rattthogenate. 



Potentia (po-ten'-she-ah) [L.]. Power, potency, 

 ability, faculty. P. coeundi, capacity for copulation. 

 P. generandi, procreance. P. irritans, a stimulus. 

 P. sexualis, it resides in the lumbar center of the 

 spinal cord. [Hollander.] 



Potentiation. See Potentization. 



Potentization {po-tent-i-za'-shun). In homeopathy, 

 the rendering of drugs potent by attenuation, dynam- 

 ization, etc. 



Potentize [po / -tent-lz) [posse, to be able]. To render 

 potent; in homeopathy, applied to drugs. 



Potentor (po-tent'-or) \_potentia, power]. A device 

 for the mechanical treatment of male impotence due to 

 lack of penile erectility. 



Potex (pcZ-teks*) [L.]. The anus, podex. 



Potocytosis (po-to-si-tc/sis) [ttiveiv, to drink; Kirog, 

 cell]. S. J. Meltzer's term for the ability of cells to 

 drink solutions. 



Pott's Puffy Swelling or Tumor. See under Tumor 

 (Illus. Diet). 



Pouch. (See Illus. Diet.) P., Broca's, a pear-shaped 

 sac lying in the tissues of the labia majora ; it is analo- 

 gous in structure to the dartos, but contains no muscular 

 fibers. P., Pressure, a bulge in the wall of the 

 esophagus due to a weakened condition. P., Prus- 

 sak's. See Prussak's Space (Illus. Diet.). P.S, 

 Tracheal, a rare condition described by Virchow, 

 arising from the posterior wall of the trachea and ex- 

 tending latterly and upward, may present above the 

 clavicle and reach below and behind the thyroid, thus 

 resembling goiter. P., Vitelline, the umbilical vesi- 

 cle. P., Weber's, the prostatic vesicle. P., Wins- 

 low's, the lesser omentum. 



Pounce (/wwj'). i. The pulverized resin of Junipe- 

 rus communis. 2. Pumice stone. 



Pourd Milk. Colostrum. 



Pousse {pus) [Fr.]. See Asthma of Solipeds. 



Poussee {pus'-a) [Fr.]. A peculiar cutaneous reaction, 

 at times an actual dermatitis, which often results about 

 the tenth day after beginning the baths of Loeche-les- 

 Bains. 



Poverty. (See Illus. Diet.) P.-line, the minimum of 

 physical existence with no allowance for a single item 

 except the primitive animal demands for food, shelter, 

 heat, light, and clothing. 



Powder. (See Illus. Diet. ) P., Arsenical, of Come. 

 See Erire Come, Arsenical Paste of (Illus. Diet.). P., 

 Arsenical, of Justamond, a caustic consisting of anti- 

 mony sul fid, 1 6 parts; arsenious acid, I part, fused and 

 powdered when cold and mixed with 5 parts of opium. 

 P., Cancer. See P., Martin's. P., Carthusian, 

 kermes mineral. P. of Cornacchino, a powder 

 consisting of cream tartar, 2 parts; scammony, 

 4 parts; antimonium diaphoreticum lotum, 3 parts. 

 Syn., Pulvis cornacchinus ; P. Cornacchini ; P. trium 

 diabolorum ; Earl of Warwick'' s powder. P., 

 Countess', cinchona. P., Cyprus, ambrette, the 

 seeds of Hibiscus abelmoschtis, L. P., Darby's Con- 

 dition, sodium sulfate, 8 parts; sulfur, 4 parts; fenu- 

 greek, 4 parts; gentian, 2 parts; black antimony, 2 

 parts. P., Divine, an aperient mixture given in the 

 Egyptian pharmacopceia consisting of the carbonates of 

 magnesium, iron, ammonium, and sodium with ginger 

 and licorice. P., Dupuytren's, a caustic powder 

 consisting of arsenious acid, 1 part; calomel, 200 parts. 

 P. of Faynard, charcoal used as a styptic. P., Gas- 



coigne's, a mixture of bezoar -with an absorbent pow- 

 der. P., Gascoin's, a compound powder much used 

 in the middle ages in cases of measles, smallpox, and 

 all spotted fevers. It contained, in addition to bezoar 

 and crab's eyes, red coral, white amber, harts' horn 

 philosophically prepared, and jelly of English viper's 

 skins. P., Gout (of Duke of Portland). See P., 

 Portland. P., Gregory's, compound powder of 

 rhubarb, consisting of rhubarb, 2 oz. ; light magnesia, 

 6 oz.; ginger, I oz. P., Lucas-Championniere's 

 Antiseptic, it consists of equal parts of carbonate of 

 magnesia, iodoform, powdered benzoin, and powdered 

 gray cinchona. P., Martin's Cancer, one consisting 

 of arsenic oxid and the root of beech drops, Epifagus 

 americanus, Nutt. P., Plummer's, one containing 

 equal parts of mercury and sulfurated antimony. P., 

 Portland, a noted remedy for gout consisting of equal 

 parts of the tops and leaves of 7'euo-ium chama:drys, 

 L., and Erythrea centaurium, Pers., the leaves of 

 Ajtiga chamapitys, Schreb., and the roots of Gtntiana 

 lutea, L. , and Aristolochia rotunda, L. Dose, I dr. 

 daily before breakfast for 3 months ; 2 scruples for 3 

 months; y z dr. for 6 months, and finally y 2 dr. every 

 other day for a year. P., Putty. See Putty-powder, 

 P. of the Three Sanders, a mixture of yellow, red, 

 and white sandal-wood, each 95 parts; roses, 1010 

 parts; violets, 150 parts; rhubarb, 70 parts; calcined 

 ivory, portulaca seeds, and licorice juice, each 70 parts; 

 starch, gum arabic, and tragacanth, each 50 parts. 

 Syn., Diatrion santalorum. P., Taplin's, a mixture 

 of powdered sulfur, 8 parts ; potassium bitartrate, 2 

 parts ; potassium nitrate, I part ; gentian, 2 parts ; 

 fenugreek, 4 parts ; aniseed, I part ; black antimony, 

 2 parts. P., Tyree's Antiseptic, a proprietary prep- 

 aration said to contain alum, biborate of sodium, eucal- 

 yptus, carbolic acid, thymol, wintergreen, and pepper- 

 mint. 



Power. (See Illus. Diet.) P., Inherent, irritability. 

 P., Nervous, the activity of the nervous system. P., 

 Rotatory, in polariscopy that exhibited by an optically 

 active substance which rotates the plane of polarization. 

 P., Saturating, the power possessed by acids and 

 bases of combining with other bodies until all the com- 

 bining capacity of the atoms of the molecule of the 

 acid or base is satisfied. P., Tonic, irritability. P., 

 Transmitting. See under Transmitting. 



Pox. (See Illus. Diet. ) P., Black, smallpox. P., 

 Sheep. See Sheep-pox (Illus. Diet.). P., Swine. 

 See Swine-pox (Illus. Diet.). P., Water. See //<//, 

 Coo lie. 



Practicum {prak'-ti-kum') [Ger. Prakticum, from 

 ■xpanTiKoc, practical]. Applied to a class-exercise in 

 natural history at which specimens are examined, dis- 

 sected, or experimented upon; commonly less advanced 

 and individual than laboratory work. 



Practise (prak'-tis) [p/acticare, to practise]. Toper- 

 form a physician's duty. Cf. Practice. 



Praeparator {prc-par'-a-tor). Gruber's name for 

 amboceptor. 



Prasoid (pra'-soid). I. A solution of globularin and 

 globularetin ; used in acute gout and rheumatism. 

 Dose, 15-20 drops 3 times daily. 2. [tt/kktoi', the 

 leek; nftoc, likeness]. The color of a leek, leek- 

 green. 



Pratique (prah'-fee'k) [Fr.]. The bill-of-health given 

 to vessels by a health officer. 



Praxagorean ( piaks-ab-go'-rc-au). A follower of the 

 medical doctrines of Praxngoras, a successor of Hippoc- 

 rates, and, like him, a native of I !oa, 



Praxinoscope {praks-in'-o-skop) [ir/iatic, a doing; 

 OKoirelv, to examine]. A modification of the zoctrope 

 adapted to the purposes of laryngologic instruction. 



