( 33 ) 



handbook ^). Taiifjontial cuttings «tf I j, of ili(> basal oxtromitios nt 

 the cells show us a [)i('(Mi-e, which agrees in hiüh (h'^ii-cM^ wiih 

 the intmccllulai" little bridges which mav i>e seen to dix-cruc in ihiu 

 sections between the smooth inusclecclls (also in (ini- pi-cparalions of 

 the gastric wall). In otiier words tiie aspect reminds one of that of 

 the rillcells in the rete malitigliii. It' it be taken for granted that all 

 this is preformed, then the opinion of ('akmkk could be accepted that 

 the epithelium-cells of the surface of the stomach are conic wiiJMhcir 

 ])oints turned towai-ds the stroma of tlu^ cellular tissue, that thev arc 

 mutually coiuiected through line cell-lilaments, between which an 

 extensive system of ducts to convey the Juices might be supposed to 

 be present ''Saftkanalchen". On good grounds howexer histologisls 

 somewhat hesitate to acce|)t the })reformation of such striu'tiii-es. 

 They iitiijlu be j)ost-niortal striuking phenomena, oi- perha[»s conti-ac- 

 tions during agony, or both. 



However this may be, it is a fact that we have z/^'/ oi)ser\('d them 

 in the intestinal \\\\\ of the duodenum of the same animals; th(> 

 epilheliumcells there A\cre cilindrical, they tirndy closed together at 

 their basis and ha<l a distinct Io\v striated l)order. Kever could these 

 two kinds of cells: the I'esorbing epitheliunicells of the stomach and 

 those of the duodenum be nnstaken for one another: but theyhaxe 

 some resend»lance. The dilferentiations : the outer lind)s and the striate*! 

 bordei' are })robably nothing else but variations of one ami the same 

 cellorgan, which we meet with to a large extent in the intestine of 

 invertebrate and vertebrate animals: a lining, which in the case of 

 Ascaris inegalocej)liala, shows the most striking resembhuice to a 

 ciliated linijig, but in which we could not notice the .v//////A'>V motion, 

 though we worked under the most favorable circumstances and had 

 quite fresh animals, which moved about intensely. Also in man Zim- 

 :mkk.mann fl. c. tig. 37) has represented the striated border of the cells 

 of the colon, which bore cellprocesses sti'ikingly resend)ling cilia, but not 

 considered by him as such either. We are of opinion that the intestinal 

 cells and at least some cells of the surface of the stomach, possess 

 the powei' to send out a great irumi>er of cell-lilamenls, w hicli stan<l 

 closely together when the striated border is contracted an<I when 

 the celllilaments have their minimiindength. but which can also be 

 extcjided and are then euabled to dixcrge. Tiie dillerenl heights of the 

 striated bordei* may ;dso be seen in intestinal epithelium cells. 



The outer limbs of the epithelium-cells of the stomach are 

 evidently vulnerable dilferentiations. in some parts of our preparations 



1) A. KtiLLiKECv's Handhiich dec ( ieWfbcleliic dcs Mensdioii. lie Aiill. lit. 1. S. 105. 



3 



Proceedings Royal Acad. Amsterdam. Vul. Vi. 



