NERVES OF THE SEROUS MEMBRANES. 275 



meshed plexus that is particularly close in the vicinity and in 

 the substance of the adventitia of the larger bloodvessels (in 

 the Frog), and exhibits oblong nuclei at the nodal points. 



I have been unable to follow out the large fasciculi of non- 

 medullated fibres in the serous layer covering the peritoneal 

 surface of the centrum tendineum ; these are characterized by 

 knot-like enlargements, and, like those found in parts of the 

 mesentery, appear to be separated from the adjoining tissues 

 by a moderately wide lymphatic space. 



The silver method of impregnation is well adapted for the 

 examination of the nerves, though even this is surpassed by 

 the plan of tinting them by means of solution of chloride of 

 gold. 



BIBLIOGRAPHY. 



1. R. BOHM. Experimentelle Studien iiber die Dura mater des Mens- 



chen und der Saugethiere. (Experimental investigations upon 

 the Dura mater of Man and Mammals.) VIBCHOW'S Archiv, 

 Bd. xlvii., Heft 2, p. 218 et seq. 



2. SCHWEIGGER-SEIDEL und DOGIEL. Ueber die Peritonealhohle bei 



Froschen und ihren Zusammhang mit dem Lymphgefasssystem. 

 (On the Peritoneal Cavity of the Frog, and its relations to the 

 Lymphatic System.) Arbeiten aus der physiologischen Anstalt 

 zu Leipzig, vom Jahre, 1866, p. 68 et seq. 



3. DYBKOWSKY. Ueber Aufsaugung und Absonderung der Pleurawand. 



(On absorption and excretion by the Pleura.) Ebendaselbst, 

 p. 40 et seq. 



4. LUDWIG und SCHWEIGGER-SEIDEL. Ueber das centrum tendineum 



des Zwerchfelles. (On the central tendon of the Diaphragm.) 

 Idem, p. 174 et seq. 



5. SCHWEIGGER-SEIDEL. Die Behandlung der thierischen Gewebe mit 



Argent, nitricum u. s. w. (On the treatment of Animal Tissues 

 with nitrate of silver, etc.) Idem, p. 150 et seq. 



6. RECKLINGHAUSEN. Zur Fettresorption. VIRCHOW'S Archiv, Bd. 



xxxvi., p. 172. 



7. SCHWEIGGER-SEIDEL und DOGIEL, loc. cit. 



8. DYBKOWSKY, loc. cit. 



9. BOHM, loc. cit. 



10. See chapter viii. of this work. 



11. Loc. cit. 



T 2 



