x VASCULAR MUSCLE AND NERVES 367 



motor centre consists of a constrictor and a dilator part, the 

 depressor nerve acting in an inhibitory manner on the former and 

 in an exciting manner on the latter, while pressor nerves act in 

 an opposite way on both." Considerable support is given to this 

 view by his recent work (1908) on the reciprocal innervation in 

 vasomotor reflexes. It appears that in depressor reflexes there is, 

 along with inhibition of tone in the vaso-constrictor centres, an 

 excitation of vaso-dilator centres. Corresponding effects, although 

 more difficult to demonstrate, take place in the pressor reflexes. 

 The action of strychnine upon the vasomotor centres affords a 

 strict analogy with its action as demonstrated by Sherrington in 

 the case of the reflexes to voluntary muscle, i.e. conversion of the 

 inhibitory phase of all vascular reflexes into an excitation. The 

 depressor nerves cause a rise of blood-pressure under full doses of 

 the alkaloid by exciting the constrictor centre with the same 

 mechanism that normally inhibits it. 



BIBLIOGRAPHY 



In addition to the copious information contained in the general and special 

 treatises referred to in previous chapters, the student may consult the following 

 monographs and memoirs : 



M. SCHIFF. Untersuchuugen zur Physiologic des Nervensystems. Frankfurt a. 



M., 1855. Lehrbuch der Physiol., I. Jahr., 1859. Recueil des rnemoires 



physiologiques. Lausanne, 1194. 



CL. BERNARD. Lecons sur la physiologic du systeme nerveux. Paris, 1858. 

 ECKHAKD. Beitnige zur Anat. und Physiol. 1863. 

 LUDWIG und THIUY. Sitz. Her. d. kais. Akad. d. Wiss., 1864. 

 LUDWIG uud CYON. Ber. d. sachs. Gesellsch. d. AViss., 1866. 

 LOVEN. Ber. d. sachs. Gesellsch. d. Wiss., 1866. 



v. BEZOLD und BEYER. Untersuchungen aus dem Laborat. in Wiirzburg, 1867. 

 BROWN-SEQUARD. Lecons sur les nerfs vaso-moteurs. Paris, 1872. 

 Mosso. Ber. d. sachs. 'Gesellsch. d. Wiss., 1874. 



GOLTZ. Arch. f. path. Anat., 1864. Arch. f. d. ges. Physiol., 1874-75. 

 VULPIAN. Lecons sur 1'appareil vaso-moteur, 1875. 

 HEIDENHAIX und GnilTZXEii. Arch. f. d. ges. Physiol., 1877. 

 GASKELL. Journal of Auat. and Physiol., 1887. 



DASTRE et MORAT. Recherches sur le systeme nerveux vaso-moteur. Paris, 1884. 

 STRICKEK. Mediciu. Jahrbiicher, 1886. 

 PATRIZI. Arch. ital. de biologie., xxviii. 1897. 

 CAVANI. Ibidem, vol. xxxix., 1903. 

 PIOTROWSKI. Arch. f. d. ges. Physiol., 55, 1894. 

 BAYLISS. Journal of Physiol., Bd. 26, 1901. 

 ASHEK. Die Innervation der Gefasse. Ergebnisse der Physiologic, I, 2. 1902. 



(Sixty -eight memoirs are cited in this review.) 

 BAYLISS. Die Innervation der Gefasse. Ergebnisse der Physiologic, Y, 1906. 



(Seventy-four memoirs are cited in this article, \vhich is the continuation of 



the preceding.) 



Recent English Literature : 



W. T. PORTER and H. G. BEYER. The Influence of the Depressor Nerve to the 

 Vasomotor Centre. Amer. Journ. of Physiol., 1901, iv. 283-299. 



W. AL BAYLISS. On the Origin from the Spinal Cord of the Vaso-dilator Fibres 

 of the Hind-limb and on the Nature of these Fibres. Journ. of Physiol., 

 1900-1901, xxvi. 173-209. 



