(34) 



some of them have been converted into a homogenous hvaline mass, 

 with (hsliiicl iii\\ar<l and outward l)oundary. Not that the external 

 poi'tioiis had hccoiue hvahne A//AA/r.v, f lieir sliape seemed little ehang-ed, 

 hilt they were in a way "verijiiolleir" as the (lerman histoloiiists sav. 

 ^V'(' must retrain IVojn expi-essing- an dpinion whether these outer 

 liiiil>s are present in all epitheiiumcells or not. It is (püte possible that 

 they are iiiuch more widely spread than ^ve suspeet and that they are 

 IV('(|iie]illy destroyed l>y iniperfeet fixation. .Alanipulating eoi-ixrtly and 

 aj>[»lying the same methods, ^^ (> wei-e not sneeessfnl in obtaining a 

 \iew of them «tji the surface of the stomaeh of a small sucklijig cat. 



In studying the literal ni-c of the snitject, \Ne have found out that 

 at the early date of J-S5H a man of Köi,ijkki{"s im])ortanee has secji 

 globules of fat in the e])itheliumeells of fresh gastric nnicons mem- 

 branes of young cats, dogs and mice. K("h,i,ikki! conimiiuicated on the 

 2<St'' of .liine 185(1 to the \\'iir:/)in(/('i' /)/ii/si/,t(/isc/i-iii('(l/ci/iischi' (rcse//- 

 .srlijift (All p. 175) in a small paper entitled : "Einige Uemerkungen 

 fiber die Resorption des Feltes im Darme, über das \'orkommen einer 

 physiologischen Fettlel)er bei jiingen Saiigethieren iind übei- die 

 Function dei- Mil/,'" that in his opinion he had seen glol)ules of fat 

 and also rather distinct indications of [tores. With these ])ores he 

 nu^ant the openings iji the "Poi"enmembran"\ the sie\e-shaped, |)ierced, 

 thickened wall of the cell, -which we now call "striated border." 



As far as we know no attention has been p<'i-id to this communi- 

 cation of Kollikeh's, exce|)t by ()(;nk\v (IJiologischer Cent i-alblatt XII, 

 S. ()(Si), l,Sl)2) \vho has also seen the structures of C\vki,ikh. To our 

 mind it is indisputable that thestomach can resorb fat from the 

 food, altliougli it be in small (|iianlities and it is also j)i-obable that 

 this excellent naturalist has been able to discei-n with simple means, 

 what camiot. with the methods of the present time, be etfected without 

 difliculty : namely to point out the striated border-shaped outer lindts 

 of the stomach cells. 



Physiology. — - ''()n llu' IllHrafliiii t>f trifji.sui froni triiiisin-ziiiiioiji'iiy 

 \\\ Dr. E. Hkk:\ia. (Communicated by Prof II. .1. Hamburger). 



1. ( hi the 'uijhii'iici' of nc'tds on the lihcration of tnipsin from fri//>san>i/en. 



As is well-known, tryji^iu, the proteolytic digcstixe ferment of the 

 pancreas, does not appear as such in this glanil, l)ul in the form of 

 aji inactive precedent stage, which Hkidknhain, to whom we o^ve this 

 (Uscovery ^) has named "zymogen"- 



1) R. Heidenhain, Bcitnige zur Kcimlniss iles Pankrea.s. PFLVGEn? Arcliiv 1S75, 

 pag. 557. 



