SPLANCHNOLOGY l6l 



ventriculus, and the gizzard. The heart is noted to lie supero-an- 

 terior to the liver, and between the anterior portion of the fissure 

 formed by the right and the left lobe. The ovary is located back^of 

 the diaphragm at the anterior end of the kidney and below the in- 

 ferior surface of the bodies of the vertebrae. The bulk of the floating 

 portion of the small intestine is located above the gizzard. 



i mm 



FIG. 43. Transverse section through the body of a hen at 13, Fig. 34. R, 

 Right side. L, Left side, i, Spinal cord. 3, Body of vertebra. 3, Superior 

 spinous process of vertebra. 4, Lungs. 5, Esophagus. 6, Heart. 7, Right 

 and left lobes of liver. 8, Sternum. 9, Skin. 10, Pectoral muscles. 



A transverse anterior section of a normal laying hen is shown 

 in Fig. 39, the section being made at 15 of Fig. 34. At this 

 point the esophagus lies centrally and above the trachea. Figure 

 40 shows a transverse anterior section through the thoracic region 

 at 14 of Fig. 34. At this point the esophagus is slightly to the 

 right of and is superior to the trachea. At this level the apex of 

 the lung is sectioned. This is in the region of the cervical air-sac. 

 Figure 41 shows a posterior section at 12 of Fig. 33. The 

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