DEVELOPMENT OF THE INTESTINES 



435 



From table 1 it may be seen that in embryos between 3 and 17 

 mm. in length the small intestines grow at about the same rate as 

 the axis of the body while the large intestines grow more slowly. 



TABLE 1 



Til sh'iiv the (jroiolh in lenglli of the inte-tlines^ us compared irilh the groirlh in 



len'jlh of the irunk^ 



^ As measured on the border opposite the mesenteric attachment. 



- Vertex-breach measurement in fetuses. Vertex coccygeal measurement after 

 birth. 



' After Mall. ' Wisconsin collection. ^ Com|)arin!L!; lunbryos ix and vi. 



'' Comparing fetuses xlv and 8; duodciuim 3.6: 7.27, jejunum (coils 2 and 3) 8.8: 

 56.4, ilcvun (coils 4, 5 and 6) 39.7: 74.5. 



^ Comparing fetuses 8 and x.xxiv; duodenum 7.27: 11, jejunum (coils 2 and 3) 

 .56.4: 89, ileum (coils 4, 5 and 6) 74.5: 266. 



* Comparing fetuses xxxiv and xlviii; duodenum 11:22, jejunum (coils 2 and 

 3) 89: 132 ileum (coils 4, 5 and 6) 266: 420. 



' Average after Weinberg. '" Average after Sernoff. 



" After Mall, Anat. Anz., Bd. 10, 1899. 



THE AMERICAN- JOfRNAL OK ANATOMY, VOr,. l(i, N'O. ( 



