HuBER, Sympathetic Nervous System. 139 



baskets enclosing the cell-bodies of sympathetic neurons, (col- 

 ored red in figure), the neuraxes of which {symp. n. g.) follow 

 the blood-vessels to the sub-maxillary, and probably also to the 

 sub-lingual gland. Their mode of ending is not known. 



Finally, in closing these lectures, may I again emphasize 

 the fact that at least the great majority of the sympathetic 

 neurons form terminal links in a neuron chain, of which the 

 second link is formed by the fibers constituting the white rami. 

 I trust therefore that the statement that the entire nervous sys- 

 tem is a unit, of which the sympathetic system is of necessity 

 only a part, may have become to you a demonstrated fact, and 

 that in your future work you will regard it as such. 



THE LITERATURE CONSULTED. 



1. J. Drummond: Sympathetic nerves. Cyclopaedia of Anatomy and Physi^ 



ology. Todd, Page 423. Vol. V, 1859. 



2. See A. KSlIiker : Die Selbstandigkeit und Abhangigkeit des sympathischen 



Nervensystems durch anatomische Beobachtungen bewiesen. ZUrich, 

 1844, where the references to the earlier literature were obtained. 



3. Golgi : ,Sul]a_fina Struttura dei bulbi olfattorii. Rivisti sperimentale di 



freniatria e di medicina^legale. Reggio- Emilia, 1875, I, 405-425. 



4. Ehrlich : Ueber|;die Methylenblaureactionj^derjebenden "Nervensubstanz. 



Deutche Medicinische Wochenschrift. Jan. 28, 1896, Page 49. 



5. Smirnow and Arnstein : Anat. Anzeiger, Bd. II, 1887. 



Smirnow : Ueber die Nerven knauel in der Froschlunge. Anat. Anzeiger, 

 Bd. Ill, 1888. 



6. Dogiel : Ein Beitrag zur Farbenfixirung von mit Methylenblau tingirten 



Praparaten. Zeitschr. f. wissenschaftliche Mikroskopie, l8gi, Bd. VIII. 



7. Bethe : Studien iiber das Centralnervensystem von Carcinus Maenas, nebst 



Angaben iiber^ein neues Verfahren|;der Methylenblau Fixation. Archiv 

 f. Mik. Anatomie," 1895. Vol.^XXXXIV. 



8. Donaldson : Central Nervous System, in An American Text-book of Phys- 



iology, Page 605. 



9. Wilhelm His: Die, Neuroblasten und deren Enstehung im embryonalen 



Mark. Archiv f. Anat. u. Physiol. (Reprint). 



10. Wilhelm His : Histogenese und Zusammenhang der Nervenelemente. 



Referat in der Anat. Section d. Internationalen Med. Congresses zu 

 Berlin. Sitzung vom 7 Aug., 1890. Archiv. f. Anat. und Physiol. 

 Supplement-Band, 1890; and Anatomie Menschlicher Embryonen. 



11. W. His, Jr.: Die Entwicklung des Herznervensystems bei Wirbelthieren. 



Band XVIII der Abhandlungen der Mathematisch-physichen Classe 

 der Konigl.Sachsischen Gesellschaft der Wissenschaften, Leipzig, 1891. 



12. Paterson, A. M.: Phil, transactions, Vol. clxxxi, 1891, page 159-186. 



13. Balfour : Monograph on the development of the elasmobranch fishes, 



1878. Also Comparative Embryology, Vol. II, Page 466, 1885. 



