HuBER, Nairo-tcndinoiis End-oi'gans. 153 



other times a spiral course, which divided into two to four 

 branches, each branch ending in a spindle-shaped structure, 

 which from its reaction to the stains used could readily be dis- 

 tinguished from the surrounding tendon-bundles. These spindle- 

 shaped structures were surrounded by a transparent sheath. 

 Spindles branched at either the central or peripheral end, were 

 observed. Soon after entering the spindles, the nerve-fibers 

 divide into two, three, or even more diverging branches, which 

 sooner or later lose their medullary sheath and as non-medul- 

 lated fibers approach the periphery of the spindles where they 

 may end abruptly or terminate between small granules found in 

 their superficial portion. The further division and the exact 

 termination of the nerve-fibers he was not able to make out. In 

 each tendon four to six endings were found. As in any one 

 tendon not all the nerve-endings may have been stained, the 

 number above given may be too low. 



I have given thus fully Marchi's account of the nerve-end- 

 ing in the tendons of the eye-musle of cattle, as in other mam- 

 mals examined with reference to this point identical end-organs 

 were found, as the following quotation which follows the above 

 statement, will show: " Ich dehnte nach und nach meine Un- 

 tersuchungen auf die Augenmuskeln anderer Thiere aus und 

 fand bei alien die Terminalkorper in derselben Form und 

 Grosse wieder, so dass die den verschiedenen Thierarten entno- 

 mmenen Praparate gar nicht von einander zu unterscheiden 

 waren." As in the earlier portion of his paper he mentions the 

 cat as one of the animals which came within range of his inves- 

 tigation, it is permissible to assume that the nerve-endings 

 found by him in the tendons of the eye-muscles of the cat were 

 in shape, size and structure like the nerve-endorgan above 

 described. 



Ciaccio (4) mentions and figures the neuro-tendinous end- 

 organs in the eye-muscles of man, but does not give special 

 consideration to those found in the cat. My own observations 

 were made with the methylen blue method. Through a canula 

 inserted into one of the carotid arteries a i per cent, solution 

 of methylen blue in normal salt was injected until the eye-lids 



