ANNUL ATA. 177 



Laboratory Work. Worms should be dissected at once after be- 

 ing killed by ether or in alcohol, before the circulation has ceased ; 

 and transverse sections made to observe the relation of the appendages 

 to the body-walls, and of the different systems within the body-walls. 

 The worms should also be hardened in alcohol, and. thin sections 

 stained with carmine be made for histological study. A portion of the 

 worm can be put in paraffine and sliced by hand with the razor or by 

 the microtome. 



LITERATURE. 



Platylielminthes and Parasitic Warms. Van Benedeu's Animal Para- 

 sites and Messmates, 1876. Leuckart's Human Parasites. Works of 

 Rudolphi, Diesing, Van Benedeu, Kuchenmeister, Siebold, Graff, 

 Lang, Kennel, Thomas, Sommer, Liu ton, etc. 



Nematoda. Works of Schneider, Meissner, Bastian, Biltschli, 

 Fedschenko, etc. For Trichina, the treatises of Leidy, Leuckart, Zen- 

 ker, Virchow, Pageustecher, etc. 



Gordiacea. Works of Villot (Ann. Sc. Nat.), Vejdovsky (Zeits. 

 f. w. Zool., 1866 and 1888). 



Acanthocephala. Works of Greef, Schneider, Andres, Baltzer, 

 Safftigen. 



Rotatoria. Works of Ehrenberg, Leydig, Cohn, Hudson, Gosse, 

 Salensky, etc. 



Polyzoa. Works of Allman, Hinks, Smitt, Nitsche, Saleusky, Sars, 

 Hyatt, Barrois, etc. 



Brachiopoda. A. Hancock: On the Organization of the Brachi- 

 opoda (Phil. Trans., 1858). E. 8. Morse: On the Systematic Position 

 of the Brachiopoda (Proc. Boston Soc. Nat. Hist., xv. 1873). With 

 the essays of Brooks, Lacaze-Duthiers, Kowalevsky, Beyer, Dall, 

 Davidson, etc. 



Nemertina. Essays of De Quatrefages, Mclntosh, Hubrecht, etc. 



Gepliyrea. Writings of Grube, Lacaze-Duthiers, Keferstein, Hat- 

 schek, Selenka, etc. 



Annulata. Darwin: Formation of Vegetable Mould through the 

 Action of Worms. Anatomy of the Earth-worm in Sedgwick and 

 Wilson's Biology, chapters 7-10. Wilson's Embryology of the Earth- 

 worm, 1889. Anatomy of Polygordius in Parker's Biology, Lessons 

 25-26, based on Fraipont's monograph in Fauna und Flora des Golfes 

 von Neapel, xiv. 1887. Eisig : Die Capitellideu des Golfes von Neapel 

 (ibid., xvi. 1887). Ehlers : Report on the Annelids of Florida (Mem. 

 Mus. Comp. Zoology, xv. 1887). With the works of Claparede, 

 Ehlers, Semper, Meyer, A. Agassiz, Hatschek, Metschuikoff, Verrill, 

 Wilson, Whitman, etc. 



