Pic roc arm in

(pik-ro-kar' -min). A preparation for staining microscopic specimens. Its composition is as follows: carmin I.o; ammonia 5.0; distilled water 50.0. After solution, add saturated watery solution of picric acid 0.0. Allow to stand in a wide-mouthed bottle until e ammonia has evaporated; then filter. See Stains, "able of. oerythrin (pik-ro-er'-itk-rin) poq, red, -f- A crystalline, bitter substance, soluble in hot water, insoluble in absolute Picrotoxin in (pik-ro-toks' -in-in). See Picrotoxin . Pictet Liquid (pik'-tet). A liquid consisting of a mixture of sulphurous acid gas and carbon dioxid liquefied under pre ure. It has been used in the treatment of pulmonary tuberculosis. A small quantity allowed to escape into a closed room quickly resumes the gaseous state, and is inhaled by the tuberculous patient. It appears to give good results. Pictura (pik-tu'-rah). In biology, the pattern or coloration of a particular part (as a feather) or of an entire animal. Piddleish (pid'-l). To urinate (a child word). "I Picric (pik'-rikj. Same as Carb azotic. P. Acid. See Acid and Pigments, Conspectus of. P. Acid Test. See Tests, Table of. oaconitin (pik - ro-akon'- it - in). A crystalline, itter substance, found in Solanum dulcamara. It may be impure solanin.