12 /,'. Sa 



that the vascular and lymphatic capillaries 

 ■. by the addition of branched or star-shaped cells. 



later, 1850, Remak (125) rediscovered the lymph 

 in the tadpole's tail by watching the living embryo, and, without 

 knowing of the preceding work, he hurriedly published an even more 

 grapl ription of the form and growth of lymphatics than I 



Subsequently, after seeing Koelliker's work, he added a 

 (p. 182 183) to emphasi e the fad that if the growth be wai 

 in the living form star-shaped cells are oever added — neither to the 



blood capillaries, : to the lymphatic capillaries, oor, he adds, to the 



growing nerves. Many years later, 1886, Koelliker (71, p. 34), in 

 an article mainly on nerves, corrected his view" of the growth of the 

 lymphatics by the addition of connective cells in favor of i 

 rovi !h by sprouting. 

 The years from L863 to L861 represent a greal advance in our con- 

 ceptions of the lympl stem. The historical article of lli~ (lit 

 on the lymphatic system must form the basis of any work w bi< b 

 with the development of the problem. In 1865 Strieker (143) pub- 

 a paper in which he expresses a doubl in regard to Koelliker's 

 of lymphatics in the tadpole's tail, on account of the fact that 



ed bl I capillaries bad also the blind sprouts, lie. however, 



submitted the bl I capillaries to an experimental study of greal 



lie stimulated them with the vapor of ammonia and gives 

 the following description of his results: 



Ich sah ein Gefassstiick. welches seinem Baue nach unzweifelhaft zu den 



D gezahll werden musste, sich im Laufe von fiinfzehn Minuten 



zweimal bis nahe zum V"erschwinden des Lumens verengern und bis ziira 



Bn iienrlnrchmesser eines Blutkorperchens wieder erweitern. Icli sah 



varicose Gefasse sich so veranderen, dass der Baueh an Stelle des Halses zu 



kam. mul umgekehrt. Mil den Formver&nderungen ging gewohnlich 



• ine andere VerSnderung Hand In Hand. So wurde beispielweise eine 



eingeschniirte Kapillargefassstrecke so blass, wurden deren Conturen so 



undeutlicb, (lass ich sie kaum niehr von der Umgebung unterscheiden 



konnte, wahrend nach bis zwanzig Mil as Gefass wieder in seiner 



urspriinglithen Iieutlichkeit zu si hen war. 



- lie discovered the contractility of endothelium. He found that 



ricitj was a still better stimulant for observing this contractility. 



lie discusses bis ndpoint of determining the nature 



of the capillary wall, especially ii ction with the silver prepara- 



of Aeby, A.uei i I th (quoted from Strieker 143), 



