CHEMOTACTIC 





I 1 1 1 1 : 1< 1 I 'S I (PERATION 



Chemotactic chemisl 



.\ ] I relating t" i bem- 



ix is. 

 Chemotaxia . Chemiotaxis 



ge ]. 

 lular atii ad repulsion. It 



is . tituents of tl 



- by 

 1 he quali- 



the |'li> ■■■ 

 Chemouc ng] Pertaining 



Chemotropism chemistry; 



putting to flight]. In 

 i .1 by |'li. i. | the 



over bacteria, or of ba< i 

 gy, the attraction of leu- 

 held in solution 

 in • '.. either positive or negative, (f. Ch 



Chenopodium 



American Wormseed; tin- fruit of C. 



linticum, a plant native to the 



Ui due to a volatile oil, 



which is I iration used. It is a mild car- 



mulant, promoting i tions of the skin 



ient anthelmintic 

 inst tin- round-worm. Dose of the oil n\v-xv. 

 Cheoplastic | c, to pour; irXaor 



and yielding by heat. C. Metal, 



mposed "f tin, silver, and bismuth, with a 



small t: atimony. 



Cherry Ml . hery\. The bark of the com- 



. Primus serotina, a mild bitter and tonic, 



ntaining tannin. I 1 — of fid. ex t. sjss— j. Prunin, 



ext. Dose gr. j— iij. C. -Compound, 



(lurry-bark 5 viij, lettuce ,^iij, 



md 5 ii root ,^i. veratrum viride gss. 



-e rt\_\\- - j. Allunof. See also Choke-cherry and 



C. -laurel, the European ever- 



lerry, Prunus lauro Water distilled 



a the same way as dilute by- 



/. Hydrocyanic. 



Cheselden's Operations. See Operations, Table* 



Chest. C, Barrel-, a peculiar formation 



of '-d in cases of long-standing em- 



ph) f the lun^- ; it is round like a barrel, and 



in respiration is lifted vertically instead of being 



see Emphysema. C. founder. 

 C. Sweetbread. See Sweetbread. 

 Chestnut. C. Extract. See Horse- 



C.-wood, a wood used in leather- 

 rived from the Castanea vesca, and 

 1 n per cent, of a tannin 

 illotannic acid. The exii 

 from 14 to 20 per cent, of tannin, is 

 lify the color produced by hem- 

 and for tanning and dyeing. 

 Chevreul's Test. 



Chevron-bone n) [ML., capro, a rafter; 



forming a V shaped 

 tudal portion ol the back-bone of 

 Is. 

 Chewstick | Hken, to pierce]. 



iisis, a popular . 

 in the Wesl Indie,. It is also u 



of the lid. 



Cheyne's Operation 



Cheyne-Stokes Breathing or Respiration. See 



C. Nystagmus, a 



variet] of nystagmus in which the oscillations of the 



Tracing of Chkyne-Stokes Breathing. 



eyeball have a rhythmic variation similar to the rhythm 



1 >i 1 be) ne Stokes respiration. 

 Chian {ki'-an) [\"»\ Chios]. Pertaining to Chios, an 



island in the -Kgean Sea. C. Turpentine. See 



Terebinthina. 

 Chiasm, Chiasma [ki'-azm, hi-az'-mah) [ i"<, r, to 



make a cross, as an X]. The optic commissure. 



Optic Chiasm and Adjacent Parts. 



1. Infunclibtilum. 2. Tuber cinereum. j. Corpora albicantia, 

 "i mammillaria. 4. Cms cerebri. 5. Pons varolii. 6. Middle 

 cerebellai peduncle. 7. Anterioi pyramid. 8. Decussation. 

 9. Olivary body. 10. Cray tubercle of Rolando. 11. .\im- 

 form libers. 12. Superioi extremity of spinal cord. 13, 13. 

 Denticulate ligament, m. Spinal dura mater. 1=;. Optii 

 tract. 16. Optic chiasm. 17. -■! nerve, is. 4th nerve. 

 19. 5th nerve. 20. 6tb nerve. 21. Facial m r 22. Audi- 

 tory nerve. 23. Nerve ol Wrisberg. 24 Glosso-pbaryn- 

 geal nerve. 25. Pneumogastrii nerve. 26, 26. Spinal 

 accessory nerve. 27. Hypoglossal 28 isi cervical pair, 

 29. 2d cervical pair. 1 vical pair. 



Chiastometer (hi-as-tom'-et-er) [ x"" 1 '"' ■ crossed; 

 pov, a measure]. An instrument for measuring 

 any deviation of the optic axes from parallelism. 

 Chibou 1 \ Fr. ]. The resin or gum of Bursera 



.1 ne, of I lorida and tropii al America ; 

 it is locally valued in disease- of the lung and kidneys, 

 d i- used in various plasters and ointments; it is 

 (ailed also cachibou and archipin. Unof. 

 Chibret's Operation. See Operations, Table of. 



