UN 





IDJ whirh grOU in in\e-h- 



toneum and MIJ .port i d fr<>m it- iralli . ' ho mesenteries. 



\\'ith a r. dtirt'on in the thirkne-,- 



there OOOOn a condensation of it-. , .. ance, 



whereby it i- enabled to fultil it- ultimat.- hin< i 



memlu 



A I! 



L< - \\iii i. deferred to i rahi qua otto, bioti ck < 



11 of the -keleton. A- her con- 



cerning the /;.////<.' < external /,-. which, a- ha leen 



1. i- deri\ed from a d ,-pre ion ,,n the oiit-r-ide of the place 

 the lir-t \ i-ceral el. : 

 ha- I) .MI minutely inves- 

 in the Chirk by Mm. in. M 

 and in the human embryo by Hi- \ 

 the lateral view of a \ er\ younir human 

 embryo (ti_. L'7 I i -how-, t li- 

 i-let't is -urroundetl by ridtre Ids' 

 whirh belong to the tir.-t ai 



ial arrlies, and are early disided into 

 -ix ele\-atioii- designated b\- Ai-abie nu- 

 meral-. Ki-om t lnv-41' is deri\ :rirl. 

 whirh therefore invohc.- a rather . 

 -ive tract f the embr\oni.- i 

 j.ai- uurirulari-). The p. 

 the rid^e-. at the bottom of \\liirh the 

 tyni|-anir uiembi-aii'- i- m--t \\ith. be.-omes 

 the external meatuS, Thi- i> continually 

 i^iowin^ deej.er ow U 

 \vull of the .-id.- ot the face becoming great ned; finally it 

 i> de\el..ped into a loni: eanal. the w.ill of \\lnrh i- in j art '< 

 in part carti! ; 1. which 

 round the Mini,,- ..f the external ineatus, tog. ite a 

 Inilky rin.i:. The accompa n \ i 1 1 - repi.- -.)) shows 

 l.arly its metamoi |.h...-i- into It -liowa that 



out of the elevation- 1 and ." t!,e tragofl M igiis are 



.leveloped, out of - and :'. the helix, and out of } the antihelix. 

 The lobule of the ear KB a lon.ir time Miiali ; it is not 



until the lifih month that it b.-r. -n 

 from the hillock marked with the num. 



id month all the .-N-ential i .ar are ;. 



Tig. 8*5. - Fundament of the 

 outer ear of a human latojl, 



(fa . : rvHoi Mrin 1 1 yniMM 

 the tnffw: '-, the antitrajnu. 

 The elevaiiotu 2 and 3 prodoee 



the ) 



lobule. JT, Lowvjaw. 



