2 Prot. 
XVIII. PROTOZOA. 
Foraminifera. Burrows & Holland (12) have monographed the For- 
aminifera of the Thanet Beds of Pegwell Bay. 
Cayeux (19) has published a lengthy paper on the Radiolaria found in 
certain sedimentary deposits. 
Amoeba has come in for a good deal of attention during the year; many 
experiments on culture having been made with it. The papers of Beyerinck 
(5), Casagrandi and Barbagallo (15), Schardinger (136) and Tischutkin 
(158) should be consulted in this connection. The importance of Amoeba 
in pathology is receiving increased recognition, as reference to the 
subject-index will show. Under this heading, Behla’s (4) pamphlet on 
“Amoeba from a parasitic standpoint” requires special mention. Prowazek 
(126) publishes a number of notes on the same animal, that dealing with 
contractile vacuole is most important, and Smith (151) describes the 
sporular development of “ Amoeba villosa .” 
Various aspects of Protozoan physiology have been dealt with during 
the year. The first volume of Davenport’s “ Experimental Morphology ” 
(31) deals almost entirely with results obtained from experiments on this 
group. Jennings (68) in the first part of a series of papers discusses the 
“Reactions to stimuli in unicellular organisms.” Herrera’s experiments 
on artificial Infusoria should be noted (62), and Dantec’s work on the 
regeneration of the Nucleus (30). 
Hertwig has given us two valuable and interesting contributions, one 
on the reproduction of Rhizopoda (63) and the other on karyokinesis in 
A ctinosphoerium (64). 
A miscellaneous series of papers must be next dealt with. Dallinqer 
(29) replies to certain criticisms of his work on the “ Bijiagellata ” in the 
Biol. Centrbl. Lustrac (98) describes “ Trypanosoma balbianii ,” Dofi/ein 
(33) “ Kentrochona” and “ Kentrochonopsis n. g.” and Wallengren “ Tri- 
chodina ,> (163) and “ Pleurocoptes hydractinicef whilst BonaERT (9) gives 
an account of certain parasitic forms. 
The pathological and parasitic questions connected with this group 
receive their due share of attention. Janowski (67) in a series of papers 
discusses the ^Etiology of Dysentery. The Hcematozoa of Malarial Fever 
form tfie subject of many contributions of which those by Celli & 
Santori (20, 21), Dominici (35), Facciola (41), Laveran (77), Lewkowicz 
(93), MacCullum (99) and Ziemann (171) appear to be the principal. 
The Hcematozoa of Birds are described by MacCullum (100 and 101) and 
Opie (117), and of Nematodes by Manson (103), who also publishes direc- 
tions for staining these peculiar flagellates. 
The Sporozoa still appear to command more interest than other classes. 
New and other forms are considered by Caullery & Mesnil (17, 18 and 
107), Labb^ and Racovitza (76), Laveran (78, 79), L£ger (84-87 and 89), 
Mesnil and Marchoux (108), Penard (118) and Porter (125), Lennsen 
(90) announces the discovery of a Sporozoon in Rotifera , whilst CuIsnot 
describes those in the coelom of the cricket. Metschnikoff (109) discusses 
the flagellated phase of Coccidia. L^ger in other publications has studied 
the origin of the plasmodium of Lithocystis (80), the biology of the same 
animal (82), the life-history of Coccidia of Arthropoda (81) and also gives 
some account of his experimental studies on Coccidia (83). 
Systematic works on the Protozoa are few this year. France (44) 
describes new and other forms from the Balaton Sea, and Fuhrmann (51) 
lists the fauna of the Alpine Lakes of Tessin. 
The increase in papers dealing with Plankton is noteworthy. Of im- 
portance are Aurivillius (2) on the Plankton of Baffin’s Bay, Pitard 
(119-123) and Zaciiarias (169). Plankton methods are considered by 
Frenzel (47) and Hensen (58) and severely criticised by Kofoid (74). 
