Huber-DeWitt, Neiiro-tc7idinoiis End-organs. 165 



Zwischenraumen zahlreiche umschriebene, langHche, netzartige 

 Geflechte, welche der Oberflache parallel Hegen." He draws 

 especial attention to the similarity in the structure of the nerve 

 endings found in the tendons of man and other mammals and 

 those found in lizards, and to the resemblance of the nerve end- 

 ing in tendon to that observed in the muscle plates. 



Golgi found the " musculo-tendinous end-organs" very 

 widely distributed, "if not in all, yet in nearly all muscles of 

 the body," the eye-muscles forming an exception. He stated 

 that they are most easily found in the rabbit, in which animal 

 they are more numerous in the posterior than in the anterior 

 extremity, being especially numerous in the deep tendinous 

 lamina of the gastrocnemius and in the deep tendinous expan- 

 sion of the back muscles. Similar observations were made in 

 the mouse, dog and cat ; in these animals, however, the end- 

 ings are more difficult to find. In the bird, the greatest num- 

 ber of these end-organs was found in the wings and in the deep 

 tendinous expansion of the large thoracic muscles. 



Victor Marchi, soon after the appearance of the above 

 communication of Golgi, investigated the tendons of the extrin- 

 sic eye-muscles with reference to the presence or absence of ter- 

 minal end organs in them. The Golgi tendon spindles were 

 found by him in the tendons of the eye-muscles of cattle, swine, 

 dogs, cats, rabbits and men. These observations were of espe- 

 cial interest in so far as they showed the presence of the nerve 

 endings in the tendons of the eye-muscles, denied by Golgi. 

 They added, however, little to the then existing knowledge of 

 the manner of termination of the nerve fibers known to termi- 

 nate therein. 



In 1888, appeared a communication from Pansini on the 

 nerve endings in the tendons of vertebrates. In his investiga- 

 tions he made use of the method suggested by Paladino, which 

 consists in immersing small pieces of tissue, previously macer- 

 ated in formic or arsenic acid, in a weak solution of palladium 

 chloride ; afterward he fixes the tissue in sodium or potassium 

 iodide and teases and mounts the preparations in acidulated 

 glycerine. By means of this method Pansini studied the nerve 



