Measurements of ribs. 



51 



border is thinner and convex where the rib is widest. The length is 

 270 mm. 



The sixth rib is 305 mm. long, measures 10 mm. at its lower end; 

 13 mm. at a distance of 5 cm. from this point, 15 mm. at 10 cm., 

 10 mm. at 14 cm. This rib has a more uniform breadth than the four 

 preceding. The anterior border is thin and sharp for 10 cm. 



The remaining seven ribs are rod like and after the seventh di- 

 minish in length from the second to the sixth. 



The distance from the first dorsal transverse process to the 13"^ 

 is 40 cm. 



A line drawn from the anterior part of the lower end of the first 

 rib to the posterior part of the lower extremity of the last rib measures 

 52 cm. 



The lower seven ribs iiave an average breadth of 10 mm. 











Bos 



Taurus. 















Ribs. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



Greatest 

 Widths. 



.50«) 



25 



35 



45 



50 



60 



60 



60 



55 



60 



60 



60 



45 



The 2°'^ has a nearly uniform breadth. 

 The depth of the thorax is 800 mm. in the lateral line. 

 The P' Rib is 250 mm. long. 

 The H'»» „ „ 620 „ „ 

 The 12'^ „ „ 040 „ „ 

 The 13'^ „ „ 530 „ „ 

 The sum of all the breadths is 670 mm. 



The first is thick, the second thinner flat below, convex and thick 

 in the middle. 



The lower part of the outer surface is concave from before back 

 in the 3'«», 4'^ 5'" and 6'K 



As is well known the groove near the anterior (inner border) of 

 the anterior ribs is formed at the expense of the outer surface. From 



•) Measurement made at lower end. 



