47 



210. Model of the human thoracic organs, natural size, 

 mounted on a board. Made by Ramme and Sodtmann, 

 Hamburg. 



Exhibited by G. Gill fy Go., 1878. Price 21 10s. 



The thorax has been opened in front and in the neck, the larynx, 

 trachea, thyroid body, carotid arteries and jugular veins are 

 shown. The anterior portions of the lungs are movable as in 

 the model just described. The front ventricular wall of the 

 heart lifts off to show the cavities of the ventricles and their 

 valves, whilst by similarly removing the wall of the auricles 

 the roots of the pulmonary artery and aorta are exposed with 

 .their valves. On lifting out the heart as a whole there may be 

 seen the bifurcation of the trachea, the descending aorta, the 

 oesophagus and veoa cava inferior. 



211. Model of the human thorax, natural size. 



Exhibited by R. M. Cameron and Son. 1879. 



Price 31. 3s. 



The anterior wall has been removed showing the cut ends 

 of the ribs. Above in the middle line are the larynx, thyroid 

 body, and trachea, and on either side the innominate artery 

 dividing into right subclavian and right common carotid, and 

 the left common carotid and left subclavian arteries. The front 

 of the lung can be removed on each side to show the ramifica- 

 tions of the pulmonary vessels and bronchi. The front of the 

 wall of the heart can be lifted off in two pieces to show the 

 cavities of the ventricles and auricles, and the whole organ lifts 

 out of its place exhibiting the bifurcation of the trachea, 

 the aorta, oesophagus, and vena cava inferior. Below is the 

 diaphragm. 



212. Model of the human thoracic viscera, natural 

 size, mounted on a board. 



From the Pedagogical Museum, St. Petersburg. 

 E. 667. 1877. 



The thorax has been laid open in front, the larynx and 

 thyroid body projecting above. The anterior halves of the 

 lungs can be removed to show the pulmonary vessels and 

 bronchi. The anterior wall of the heart can be taken oft' show- 

 ing all its cavities and the root of the pulmonary artery with 

 its valves. The remairxler of the heart may be removed to 

 show the bifurcation of the trachea, the descending aorta, and 

 oesophagus. Two small separate models on the same stand 

 exhibit enlarged vesicles from the lungs. 



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