DKYM> M E'S CELLS OR O >RPl S< 



398 



IU i I 



Drysdale's Cells or Corpuscles. Certain microscopic 

 cells in Derally round, sometimes oval 



in form, transparent, containing fine granules, bul no 

 nucleus, rhej have been d< is pathognomonic 



. but this is disputed. 

 Dualin , of two] A rive com- 



. mixture of nitroglycerin 5° parts and 

 nitr.ucil sawdust - 

 • 

 Dualism >l m by which 



natural phenom< icplained upon two principles. 



D., Chancrous, the th the existence of two 



ancre — the non-infecting, <>r soft chancre, 

 and the infi true (hard) chan 



Dualisuc ftwo]. Characterized 



by duality. D. Theory of the Composition of 

 Carbon-compounds ; every chemic compound is 



trically different, and 

 these arc further made up of two different groups 

 or - I'd'- I iualistic theory of 



revalent in Germany until about i860. 

 Duality dual]. Dualism; the 



. -11 i*l potentially independent ac- 

 tio:,. 1 of the cerebral hemispheres. 

 Dubini's Disease. " Electric chorea ;" myelitis con- 

 vulsiva; .1 malady met with in Italy, differing from 

 chorea in th of the movements, which are 

 . ten and shock - like ; in the course of the disease, 

 which : fatal ; and in the ad- 

 dition of muscular palsy and wasting. Its etiology 

 and g) are obscure. - ises, Table of. 

 Dublin Method. See atment, Methods of. 

 Dubois' Caustic tic. 



Duboisia [after Dubois, a French botan- 



leaves of D. my . an Australian 



It 1 una in physiologic and 



therapeutic D., Ext. l)o>e gr. y^-j^. D., 



Ext. Fid. Dose ir^ v-x. D., Tinct. Dose n\ v-xx. 

 Duboisin [after Dub </ . a French botanist], 



An alkaloid from Duboisia myoporoides, 

 yamin. 

 Dubrueil's Operation. See Operations, Table oj ". 

 Duchenne's Disease. See Diseases, Table of. D. 

 Paralysis. a, Table of. D. -Aran Type 



of Muscular Atrophy. See Diseases, Table of. 

 Duck-bill Forceps. See Forceps. D. Speculum. 



1 >n. 

 Duckett's Closet. - . Disposal of. 



Duck-foot 1 of 



Duck-legged duk /■./,,/). Having very short legs. 

 Duck-weed Disease {duk'-wld dis-iz'). A German 



■ ir tuberi ul< sis in 1 .11 tie. 

 Duckworth's Theory. 1 he «, ur humoral theory of 

 nt. It is that there h a basic,* arthritic 

 bit, of which gout and rheumatism 

 gouty diathesi 

 irmality of the nerve-cent 

 which may he inhei |uired ; and (b) a peculiar 



ity for 1 ration within the whole 



I 1- formed al times in excess 

 or - duly transformed into more 



Duct. ■• Ductus j. A tube for the con- 



body. D., Aberrant, a 

 1 • in length, run- 



nii- rtion of 1 I of the epi- 



D., Aberrant Bile, one of a number of 

 bili ■ Uy found in 



1 surrounded by 

 I" 1 ' hepatii nee, 



D., Acous- 

 tic, the -\t.rnal aud D., Adipose, ..,, 



the sacs in cellular tissue containing the fat. D., Air, 

 in biology, one ol the intercellular spaces in aquatic 

 plain-, containing air. D., Alimentary. See />., 

 Thoracic. D., Alveolar, one of the infundibula of 

 the bronchioles. D., Annular, in biology, one of 

 the rin;; shaped thickenings of the cells of vascu- 

 lar ti»ue. D. of Arantius. See P. venosus. D., 

 Archinephric. See D., Mesonephric. D., Arterial. 

 D. arteriosus. D. arteriosus, a short vessel in 

 the ictus between the main pulmonary alter} and the 

 aorta. It becomes obliterated at birth. D., Auditory, 

 the space between the membrana tectoria and the 

 membrana basilaris of the cochlea. D. of Bartholin, 

 the larger and longer of the sublingual ducts, opening 

 into the mouth near to, or in common with, Wharton's 

 duct. D. of Bellini, one of the ex< retory tubes of the 

 kidneys. D., Biliary. See D. , Common Bile. D. 

 of Botal. See D. arteriosus. D., Branchial, in 

 Myzontes, a short tube between the branchial pouch 

 and the intestinal cavity. D., Canalicular, one of 

 the smaller galactophorous ducts of the mammae. 

 D., Cement, in Ctrripedia, one of a number of tubes 

 that pass through the antenn.e from the cement-glands. 

 D. choledochus. See D.. Common Bile. D., 

 Cochlear. See Canal, Cochlear. D., Common 

 Bile, a duct about three inches long formed by the 

 union of the cystic and hepatic ducts, and convey 

 ing the bile to the duodenum. D. of Cuvier, in 

 the fetus, one of two short transverse venous trunks, 

 on either side, opening into the amicle of the heart, 

 each being formed by the union of a superior vein, 

 the primitive jugular, and an inferior vein. The right 

 one becomes the superior vena cava ; the left one 

 disappears. D., Cysthepatic. See Hepato-cystic . 

 D., Cystic, the excretory duct of the gall-bladder; 

 it is about \ x /> inches long, runs backward, downward, 

 and to the left and unites with the hepatic duct to form 

 the common bile-duct. D. of Darwin. See D., 

 Cement. D., Definitive, one of the straight milk-ducts 

 in the nipple. D., Efferent. Same as Canal, Deferent. 

 D., Egestive. See D., Excretory. D., Ejaculatory, 

 a duct about an inch long, on cither side of the body, 

 formed by the union of the vas deferens and the seminal 

 vesicle. The semen passes through it into the urethra. 

 D., Endolymphatic, a tubular process of the mem- 

 branous labyrinth of the ear, passing through the 

 aqueduct of the vestibule into the cranial cavity, where 

 it terminates below the dura mater in a blind enlarge- 

 ment, the sacculus endolymphaticus. D., Esophago- 

 cutaneous, in biology, a duct joining the esophagus 

 with the branchial pore, and thus with the exterior. D., 

 Excretory, the tube through which the secretion of a 

 gland is discharged. D., Galactophorous, one of 

 the 15 or 20 milk -ducts of the lobes of the mammary 

 idands. They converge toward the areola, and ter- 

 minate upon the surface of the nipple in small de 

 pressions. D., Gall. See D., Bile, D. t Hepatic, and 

 D. , Cystic. D. of Gartner, the canal of Gartner. 

 See Canal. D., Genital, the genital canal. See 

 Canal. D., Guttural, the Eustachian tube. D., 

 Hepatic, a duct, I x { inches long, formed at the margin 

 of the transverse fissure of the liver by the right and 

 1 11 hepatic ducts. It unites with the cystic duct to 

 form the common bile-duct. D., Hepatic, Left, a 

 duet arising from the left lobe of the liver, and joining 

 the right hepatic duct to form the common hepatic 

 duct. D., Hepatic, Middle, an occasional branch 

 of the hepatic duct, conveying the bile from the quad- 

 rate lobe of the liver. D., Hepatic, Right, a duct 

 arising from the right lobe of the liver, and joining the 

 left hepatii duct, to form the common hepatic duct. 

 D., Hepato-cystic, one of the biliary ducts emptying 



