

PISCICTLUS 



1105 



PITTACIUM 



peciallv for the purpose of stocking streams and lit- 

 toral waters with edible varieties of fish. 



Pisciculus (pis-ik'-u-lus) [L.]. An old name for the 

 biceps muscle of the arm. 



Piscidia (pis-id' -e-ah) \_piscis, fish; ccedere, to kill]. 

 Jamaica Dogwood ; the bark of P. erylhrina. Its 

 active principle is thought to be a glucosid, piscidin. 

 It resembles opium in its physiologic properties, which, 



(however, are much less intense and without unpleasant 

 r-results. It is useful in whooping-cough and 

 neuralgia, but sometimes causes gastric distress. Dose 

 die (proprietary) fid. ext. ^ss-j, cautiously in- 

 creased. Liquor sedans. See Viburnum. Unof. 

 Piscidin (pis-id'-in) \_piscis, a fish ; ccedere, to kill], 

 H., 4 O g . A crystalline body, the active principle of 

 cidia erythrina. Its action is chiefly on the spinal 

 It is said to paralyze the sensory ganglia, and 

 to excite the motor ganglia ; it also depresses the heart. 

 Pisciform ( pis' -if-orni) \_piscis, fish; forma, form]. In 



biology, resembling a fish in form. 

 Piscivorous ( pis-iv' -or-us) \_piscis, fish ; vorare, to eat]. 



In biology, living upon fish. 

 Pisiform pis' -if -or m) [pisum, a pea; forma, form]. 

 Resembling a pea in shape. P. Bone, a small, near- 

 ly circular bone on the inner and anterior aspect of 

 the carpus. 

 Piso (pi 1 -so) [L.]. Mortar. 

 Pisohamatus (pi-so-ha-ma'-tus) [-iooc , a pea ; hama- 



tus, hooked]. Same as Piso-uncinatus. 

 ?iso-uncinatus (pi-so-un-sin-a'-tus) [tt/ctoc , a pea; 

 ., hooked]. A rare muscle, passing from the 

 pisiform to the unciform bone. 

 Piss (pis) \_yi.Y.. t pissen, to piss]. I. To urinate. 2. 



Urine. 

 3 isse, Chaude (shod pes) [Fr.]. The scalding and 

 painful urination of the acute stage of gonorrhea, 

 issocopy (pis-sok'-o-pe) \y\Y..,picchen, pitch ; ko-tecv, 

 to strike]. The process of covering with pitch ; also 

 epilation through the action of a pitch -pi aster, 

 istacia ( pis-ta'-she-ah) [moraia/, lentisk]. A genus 

 of anacardiaceous trees of warm regions. P. vera, 

 yields the edible pistachio-nut, which is used in phar- 

 macy in the preparation of emulsions. Mastic and 

 Chian turpentine are also produced by trees of this 

 genus. 



istation | pis-ta' -shun) [pistare, to pound]. The act 

 ; of bruising in a mortar. 

 istic (ns'-tik) [r«rr/K6c, a word of doubtful meaning; 

 I it may signify " drinkable," i.e., liquid, or " faithful," 

 i.e., genuine]. A qualification applied to the best and 

 i purest nard, or true spikenard. 

 Btil (jnY -til) \_pistillum, a pistle]. In biology, a 

 i modified leaf or leaves forming the central organ of a 

 tl o wer. bearing the ovules and seeds. It consists of 

 the seed-containing portion, the ovary ; the pollen-re- 

 I :emng portion, the stigma ; and generally an interven- 

 ng portion, the style. 



stillary ( pis'-til-a-re) [pistillum, a pistle]. Inbiol- 

 >gy, of or pertaining to the pistil. 

 5tillate {pis'-til-dt) [ pistillum, a pistle]. In biology, 

 ipplied to flowers that possess pistils but not stamens, 

 mllidium {pis-til-id' -e-um). See Archegonium. 

 -tilliferous (pis-til-if'-er-us) [pistillum, a pistle; 

 rrre, to bear]. Same as Pistillate. 

 tillody ( pis'-til-o-de) [pistillum , pistil ; eldoc, form]. 

 n biology, the metamorphosis of other organs into 

 ' istils or carpels. 

 • ton Pulse. See Corrigan's Pulse. 



[ME.,/?/, a pit], i. A hole, depression, or cavity 



h the body ; e.g., the pit of the stomach, the armpit. 



; One of the pores in the more or less liquefied cell- 



I alls of many glands. 3. Parts are said to pit on 



7o 



pressure where they preserve for a time the indenta- 

 tion made in them by pressing with the finger. Pit- 

 ting on pressure is seen in edema. P. of the Stomach : 

 (i) a name popularly given to that part of the ab- 

 domen just below the sternum and between the car- 

 tilages of the false ribs. It is also termed Scrobic- 

 ulus cordis ; (2) any one of the openings of gastric 

 tubules visible on the mucous surface of the stomach. 

 P., Tear, the lacrymal sinus. 



Pitch (puk) [ME., 'picchen, pitch]. I. That quality of 

 sound which depends upon the relative rapidity of the 

 vibrations that produce the sound. In percussion, vari- 

 ations in the pitch of the sounds elicited may have a 

 high diagnostic importance; e.g., in the case of the 

 lungs, a high-pitched note on percussing the chest 

 usually indicates either consolidation of the lung-tissue 

 or the presence of something abnormal between the lung 

 and the chest- wall. 2. [Pix, pitch.] The residue re- 

 maining in the still after nearly all the volatile constit- 

 uents have been driven off in the fractional distillation 

 of coal-tar. It has a specific gravity of from 1. 09 (soft 

 pitch) to 1. 12 (hard pitch). P., Burgundy, the pre- 

 pared resin of Abies excelsa. When pure, it is a brittle, 

 yellowish-brown, adhesive substance, readily soluble 

 in water, in absolute alcohol, and in glacial acetic 

 acid. It is used in the preparation of pitch-plaster. 

 P., Canada, the prepared resin of Abies canadensis. 

 It is a brittle, reddish, opaque substance, containing 

 traces of a volatile oil. It is used for the manufacture 

 of plasters. P., Jew's, P., Mineral, asphalt. P.- 

 plaster, emplastrum picis. 



Pitcher (pich'-er) [ME., picker, a small jug]. See 

 Ascidium. P. -plant. See Parracenia, and Nepen- 

 thes. 



Pith [ME., pith, pith]. The soft cellular tissue found 

 in the center of the stalks of plants. It has a very 

 low specific gravity. Also, the marrow of bones. 



Pithecanthropi (pith-ek-an' -thro-pe) [-'Stjkoc, an ape; 

 avdpurroQ, man; //. of Pithecanthropus']. In biology, 

 ape-men, the hypothetic prehistoric men, alali. 



Pithing (pith'-ing) [ME.,/////, pith]. 1. The removal 

 of the cerebral lobes of a frog or animal for the pur- 

 pose of physiologic experimentation; decerebration. 

 2. The slaughter of animals by penetrating the cerebro- 

 spinal axis. 



Pithode (pith'-od). See Karyokinesis. 



Pitres' Method. The method of post-mortem exami- 

 nation of the brain by means of vertical transverse 

 sections from before backward. The first or pre- 

 frontal section is carried down two and a quarter 

 inches in front of the fissure of Rolando ; the second, 

 or pedunculo-frontal section is made three-quarters of 

 an inch in front of that fissure and divides the second 

 and third convolutions near their insertion into the 

 ascending frontal convolution. The third or frontal 

 section is made at the level of the ascending frontal 

 convolution. The fourth or parietal section passes 

 through the ascending parietal convolution. The fifth 

 or pedunculo-parietal section is carried down an inch 

 behind the fissure of Rolando. The sixth or occipital 

 section is made a little less than half an inch in front 

 of the parietooccipital fissure. A vertical antero-pos- 

 terior incision through the superior vermiform process 

 of the cerebellum opens the fourth ventricle. 



Pittacal, Pittical (pit'-ak-al, pif-ik-al) [Tt'rra, irieoa, 

 pitch ; Ka/.6g, beautiful]. One of the aurin series of dyes, 

 first obtained in oxidizing the fractions of beechwood- 

 tar boiling at high temperatures. It consists of the 

 dark blue salts of eupittonic acid. See Pigments, 

 Conspectus of. 



Pittacium (pit-a'-she-um) [rr/rrd, tziaaa, pitch]. Pitch- 

 plaster. 



