VOICE. 



1403 



. Larynx somewhat like the horse, 

 Fig. 906. 



but destitute of semilunar membrane. * Voice 

 resembling the bark of a dog ; hence its name. 



Tapir Amcricnmis. Larynx : H. & L. less 

 than in the horse. Thyroid : pomum absent. 

 For the Cart, of Santorini and Cart Cuneiform, 

 are substituted fibre-cartilaginous masses. | 

 Vocal ligaments : superior short and indis- 

 tinct ; inferior strong. Ventricles elongated 

 into an oval blind sac. A semilunar opening 

 in the base of the epiglottis, leads to a curved 

 cavity on each side of it. Voice, a species of 

 whistle.^ 



Sus scrofa. Larynx: H. 1*55 in. Thyroid: 

 wings united at an* acute angle, become more 

 acute below ; superior cornua absent. Cricoid 



Fig. 908. 



Larynx of the Horse laid open. 



a, epiglottis ; b, semilunar membrane ; c, aperture at 

 the base of the epiglottis ; d, sulcus ; e, ventri- 

 cles ; /, arytenoids; g, inferior vocal cords; h f 

 trachea. 



The Larynx of the Ass laid open. 



a, epiglottis; b, arched cavity; c, apertures; 

 arytenoids and vocal cords ; e, trachea. 



Mesial section of the Larynx of the Pig (Sus 



scrofa). 



a, sac ; b, superior ligament ; c, inferior ligament ; 

 d, sacculus laryngis ; e, left arytenoid c. ; f, cri- 

 coid c. - r g, trachea^ 



an eccentric ellipsoid. Arytenoids locked 

 to each other at the apex of their superior 

 prominence by a cartilage. || Vocal cords 

 directed obliquely downwards to form, with 

 the axis of the vocal tube, an angle of 30, and 

 are inserted at the height of the thyroid 

 from its lower margin. L. 0'9 in. Ventricle d 

 (fig. 908.) an oblong chink leading, by a groove 

 inclined backwards, to a sac, a. Voice a 

 grunting, discordant sound. ^[ 



Rhinoceros. Larynx : H. 5 in. ; Thyroid : 

 cornua none, figure rhomboidal. Cricoid : 



* Cflvier. t Brandt. 



J Brandt. Binglcy, An. Biog. 



|| This cart, is peculiar to the pig. 



| The larynx of this animal has been described by 

 Casserius, Herrissant, Cuvier, Wolff, and Gurlt ; the 

 former first noticed the sacs in these words, ' Fora- 

 mina duorum ventrium per quae Ser ingreditur, ad 

 grunnitum in porcis efficiendum." Herrissant sup- 

 posed the sacs to be the principal organs in the 

 production of the voice of the pig, but we cannot 

 concur in this opinion, they merely affect the quality 

 of the sound. 



5 c 3 



