lO UNIVERSITY OF MISSOURI STUDIES 



horizontal plane. Since every point upon the outline of an 

 organ has been projected along a horizontal line parallel 

 to the mid-plane from its position on the organ to the 

 (anterior or posterior) surface of the body, it is necessary 

 in order to see that point in its correct relations, to imagine 

 that the eye is in the line of projection. The position of the 

 eye must change, therefore, for every object viewed, and the 

 projections do not represent exactly what would be seen 

 if the body were transparent and viewed from a single 

 point. 



The nomenclature adopted by the German Anatomical 

 Society at its meeting in Basel, 1895 [BNA] is used in 

 Plates I to XXV. The intervertebral discs are designated 

 by Roman numerals; the number in each case correspond- 

 ing with the vertebra above. 



The following topographic lines and directions are 

 used: 



The midline of a section is a line passing through the 

 middle of the sternum or linea alba anteriorly and the center 

 of the body of the vertebra posteriorly. The midplane of 

 the body is a vertical plane which contains the midlines of 

 the sections. Upon the anterior surface of the body this 

 plane would appear as a line passing through the middle 

 of the sternum and the linea alba (anterior midline "OO," 

 Plate XXVIII) and upon the posterior surface as the pos- 

 terior midline ("00," Plate XXIX). 



The midclavicular line is a vertical line through the 

 middle of the clavicle, as seen in projection. It is about 8 

 cm. from the midplane. 



The midaxillary line is a vertical line through the apex 

 of the axilla when the arm is in its normal position ("OO," 



