50 



hook attached to the cricoid cartilage in the middle line 

 anteriorly admits of its separation. On the left side the thyro- 

 arytenoid muscle and the arytenoid muscles are separable to 

 show the arytenoid cartilage and the true vocal cord. On the 

 right side the true and false vocal cords, and the pouch opening 

 between them, are visible, and higher up the epiglottis and the 

 opening into the larynx. 



223. Model of the human larynx, somewhat enlarged. 

 Made by Ramme and Sodtmann, Hamburg. 



Exhibited by G. Gill $ Co. 1878. Price 12s. 6d. 



The model is not designed 'to show minute details; the 

 organ is represented as bisected down the middle line to show 

 its internal arrangements. 



224. Model to illustrate the action of the muscles of 

 the larynx. 



E. 157. 1874. 



This consists of an upright bar on a stand, to which another 

 rod is hinged near its bottom. The upper ends of the two rods 

 are connected by an elastic band, which represents the thyro- 

 arytenoid muscle, whilst a second elastic band passes from the 

 free end of the movable rod to the wooden stand. 



225. Models of the human hip and shoulder joints, 

 mounted on a board. 



From the Pedagogical Museum, St. Petersburg. 

 E. 678 and 679. 1877. 



The capsular ligaments have been divided to show the heads 

 of the femur and hurnerus respectively with the cavity of the 

 joint. In the case of the hip joint the round ligament is repre- 

 sented as divided. 



226. Professor Cunningham's sectional models of the 

 fully flexed elbow joint, in three parts. 



E. 20. 1890. Made by L. Casciani $ Son. 



227. Model of the human hand, enlarged. 



E. 16. 1862. Made by the late Dr. Auzoux, Paris. 



The various muscles are made movable so that they can be 

 successively removed in layers, to exhibit those which lie beneath 

 them and the bones. 



228. Model of the bones of the human hand, natural 

 size, mounted on a stand. 



E. 2. 1879. Made by P. T. Mailing, Christiania. 



