ABSTRACT AND EEVIEW. 109 



Chromoraonadinacese and Phseophycese ou the other. It will 

 also have relations, iu a wider and different sense, with the 

 Vampyrellaceae, Labyrinthulese, Myxomycetes, and Fungi on 

 one side and on the other with the Heliozoa, Rhizopoda, and 

 Radiolaria. 



A parasite, probably Pseudospora maligna, sometimes 

 occurs in the cysts. 



VI. Remarks. 



[Hieronymus, of course, approaches his account of this 

 organism entirely from the botanical standpoint.^ He adduces 

 chiefly the presence of chromatophores and of a cellulose cyst 

 as reasons for regarding the organism as a plant ; but these 

 occur in several well-known instances iu animals. It would 

 have been more to the point, perhaps, had he relied on 

 the presence of phloroglucin and calcium oxalate, and the 

 alleged periodic holophytism. Phloroglucin is unknown among 

 animals. Calcium oxalate occurs only, I believe, in the 

 Myxomycetes. Hieronymus may, of course, be mistaken in 

 his identification of the substance found in the spindles with 

 phloroglucin ; he certainly mentions a fair number of tests, but 

 these seem all merely to rest on our ignorance of any other sub- 

 stances which would give the same reaction. His figures of the 

 spindles (physodes) differ a good deal from those given by 

 Archer and Lankester. 



It is also, perhaps, a curious coincidence that these physodes 

 should have so marked an affinity for the basic aniline stains ; 

 it is perfectly true, on the other hand, that they exhibit no 

 structure in the least comparable to that of a nucleus. 



Hieronymus's account of the nuclei seems sufficiently to 



^ The notions indulged in by Hieronymus as to the relationship of Chlamy- 

 domyxa to the yellow-browu Algae, and of every yellow-brown organism with 

 every other, are devoid of any serious basis in fact. Whilst his paper contains 

 some observations of importance, e.g. as to the nuclei, and some the accuracy 

 of which seems to need further inquiry, e.g. as to the chromatophores, the 

 general views which dominate the author's speculations appear to be those of 

 a botanical specialist whose knowledge of Protozoa is defective. — E. E,. L. 



