PARASITISM, REPRODUCTION. 
Prot. 39 
Pathogenic offocts and significance of Balantidium coli , AskanAzy 
(6 & 7) & Klimenko (181). Occurrence of Chilodon dentatus in a case of 
dysentery, Guiart (139). — Significance of Infusoria ( Megastoma , Tricho- 
monas, and Plagiomonas) met within human stomach and intestine, 
Oohnheim (67). 
Symptoms caused in man by a new Protozoan parasite of uncertain 
affinity, Sergent (344). 
Cytoryctes vaccince from the cells of variola and vaccine is not a true 
parasite, but only a variety of cell-inclusion ; the possibility of a parasite 
being present is not, however, excluded, Foa (114 & 115). — Borrel (25) is 
strongly against the Sporozoan nature of cell-inclusions found (especially 
by Bose and others) in epitheliomata and infectious epithelial maladies. — 
Bose (27-29) finds organisms in the cells of ovine variola and vaccine 
which he considers are Sporozoan parasites [very unconvincing^ and the 
virulent agents ; in (30) he describes similar organisms from infectious 
epithelial maladies. 
Fein berg (108 & 109) labours to shew that “ Histosporidium carcino- 
matosum ,” which he considers a Sporozoan-like organism, is the cause of 
cancer. [Whatever else the II. c. bodies represent, they are certainly not 
Sporozoa.J — P limmer (299) thinks a Plasmodiophora-like organism is the 
cause [!]. — Honda (160) & Israel (163) strongly criticise the parasitic 
theories. 
D. Reproduction^ 
General synopsis of* the types of reproduction among Protozoa, 
Stempell (365). 
1. Asexual: fission, schizogony, etc. 
“Gemmation-division” in Centropyxis and Chlamydophrys ; fission and 
brood formation in Entamoeba , Schaudinn (333). 
Schizogony in : Adelea dimidiata var. coccidioides, LIsger & DuboSCQ 
(209) ; A. mesnili, Perez (292). 
Multiplication of Piroplasma donovani n. sp., Laveran & Mesnil (203). 
— Peculiar endogenous multiplication in P. bigeminum, by which chromatic 
fragments give rise to independent individuals, Ligni^res (226). 
Schizogony in Blastulidium, a new Haplosporidian, Perez (294). 
Reproduction of the Euglenidce , Dangeard (79). 
Laws regulating hi partition or binary fission, exemplified by Euglenopsis 
and Trachelomonas , Dangeard (74). 
Multiplication by longitudinal division, in various new Cercomonads, 
L^ger (204). 
Multiplication of: the Tsetse-parasite, Martini (250); Trypanosoma 
equinum, LigniJires (227), Elmassian & Migone (98), and Sivori & 
Lecler (357) ; T. gambiense , Castellani (52 & 53) and Dutton & Todd (95). 
Multiplication in Eutreptia viridis by longitudinal division, Steuer (370). 
— Fission in Euplotes , Minkevich, (266 & 267). 
Longitudinal fission in Licnophora; regeneration experiments on 
L. auerbachii , Stevens (371). — Degenerative hyperregeneration in Stylo- 
nichia , Prowazek (305). — Fission in Trachelius ovum , Hamburger (143). 
The only observed multiplication in Lernceophrya n. g., is by the 
formation of isolated internal ciliated embryos, Perez (293). 
2. Sexual: Gametes and conjugation. 
Conjugation described in Amoeba undulans , Traube-Mengarini (388 & 
389). — Formation of gametes in Chlamydophrys (isogamous) and in 
Centropyxis (anisogamous) ; conjugation (karyogamy) in Entamoeba, 
Schaudinn (333). 
