456 PROTOPHYTA 



can hardly say. In conclusion, and as summing the matter up, the 

 words of de Bary (' Comp. Morph.,' &c., p. 475) may be quoted. ' If we 

 assume for a moment a connection between the Bacteria and the 

 Flagellata, it is evident that as a consequence the following series of 

 forms converge to the Flagellata : firstly, the series of Bacteria and the 

 Nostocaceae ; secondly, that of the Mycetozoa ; thirdly, that of the 

 chlorophyllaceous Algae, with which are connected in ascending line the 

 main series of the vegetable kingdom and of the Fungi as one or more 

 lateral branches. . . . fourthly, and lastly, the Rhizopoda and the 

 Protozoa with the animal kingdom, which connects w r ith these in an 

 ascending line.' 



LITERATURE. 



De Bary Vorlesungen tiber Bacterien (Leipzig, 1885 and 1886). (See English trans- 

 lation by Garnsey and Balfour, Oxford, 1887.) 



The above contains an admirable guide to the literature of the subject. (See 

 also the same author's Comparative Morphology, &c.) 



Cornil et Babes Les Bacteries, &c., 2nd ed. (Paris, 1886). * 



Crookshank Introduction to Practical Bacteriology (London, 1886). 



Duclaux Chimie biologique (Paris, 1883). 



Grove A Synopsis of the Bacteria and Yeast Fungi (London, 1884). 



Klein Micro-organisms and Disease, 3rd ed. (London, 1886). 



Hueppe Die Formen der Bacterien (Wiesbaden, 1886). 



Hueppe Die Methoden der Bacterienforschung (Wiesbaden, 1885). 



Zopf-Die Spaltpilze (Breslau, 1884). 



The references to the vast literature of the subject in the above books will be a 

 sufficient guide to the most ardent student. At the same time it would be unpardon- 

 able to abstain from a special reference to the labour^ of Cohn, Pasteur, Koch, Lan- 

 kester, Brefeld, Van Tieghem, Prazmowski, Naegeli, and Lister, since these are of 

 fundamental importance. 



