P rot. 1 
PROTOZOA. 
BY 
Stuart O. Ridley, B.A., F.L.vS., &c. 
The General Subject. 
Nicholson, H. A. Manual of Palaeontology for the use of Students. 
2nd edn. ; 2 vols. Edinburgh and London : 1879. 
Classifies Protozoa as: — Class I., Gregarinidje. Class II., Rhizo- 
PODA. Order 1, Monera ; 2, ylmce&ea; 3, Foraminifera ] 4, Radiolaria ; 
6, Spongida. Class III., Infusoria. 
Unicellular animals, infra (.3) p. 672, considered in relation to the cell- 
theory ; they differ from mere histological cells, in constituting physio- 
logical as well as anatomical units. 
Gruber, A. Kleine Beitrage zur Kenntniss der Protozoeu. Ber. Ges. 
Frieb. vii. p. 533 [cited from Zool. Jahr. Bericht, Naples, 1879]. 
[^Calcaria, g. n.] 
Grassi, B. Dei Protozoi parassiti e specialmente quelle che sono nell’ 
uomo. Gazz. Med. Ital.-Lomb. 1879, No. 45. 
[Not seen by Recorder.] 
Norsa, G. Intorno ai Protisti de Mantovano. Bollet. Scientif. i. p. 13. 
Leuckart, R. Die Parasiten des Menschen und die von ihnen herriih- 
renden den Krankheiten. 2nd edn. ii. Leipzig and Heidelberg : 1 879. 
Systematic position of the Volvocinecp. and limits of the animal and 
vegetable kingdoms : E. Maupas, C. R. Ixxxviii. p. 1274, discusses these 
questions, combating Stein’s arrangement of the Volvocmece in the animal 
kingdom, for true vegetable cells may possess vacuole contractiles, and 
zoospores of Algce may have nuclei. 
INFUSORIA. 
Chief Publications : — 
1. Entz, G. Ueber einige Infusorien des Salzteiches zu Szamosfalva. 
Term, fiizetek, ii. p. 219, pis. viii.-x. (in Hungarian), iii. p. 33 
(German version). 
1879. [vOL. XVI.] D 5 
