THE GENERAL SUBJECT, INFUSORIA. 
Prot. 3 
Two cross classifications are also given, by which : — 
(i.) — Legion Infusoria embraces Orders 8-21 of the above series, 
(ii.) — Section A. Pantostomata. lugestive area diffuse. Includes 
orders 1-11 of the above arrangement. 
Section B. Djscostomata. Ingestive area discoidal, not constitut- 
ing a distinct mouth. Includes Orders 12 & 13. 
Section 0. Eustomata. Ingestive area taking the form of a single 
distinct mouth. Includes Orders 14-19. 
Section D. Polystomata. Ingestive areas distinct and multiple. 
Includes the Class Tentaculifera (Orders 20 & 21). 
General Anatomy and Physiology. 
The chief modifications of the nucleus and nucleolus (here termed 
endoplast and endoplastule) in the Infusoria^ s. lat., figured by Kent, (1) 
pi. xlix. General homologies inferred to exist between the individual 
Infusorian and the individual Metazoan cell. The Opalinidm represent 
the Morula stage. Analogies are pointed out as existing between various 
Infusoria and members of the Metazoa. 
In experiments relating to spontaneous generation the same author, (1) 
p. 137, finds that some minute germs resist the wetting action of water 
for some time. Monas lens was seen to develope from minute germs 
into Ileteromita, and to undergo other physiological changes. 
Flagellata and other Infusoria, and Amoeba, &c., found abundantly on 
wet grass in London, by the same author, (1) p. 140. 
A. Oertes, Sur la glycogenese chez les Infusoires. C. R. xc. p. 77. 
Reported in J. R. Micr. Soc. iii. p. 285. The author has determined, by 
means of treatment with iodized serum, the presence of glycogen in the 
extended parts of the sarcode, and in them only, of the Infusoria ; the 
particles, which are usually rendered reddish-brown, have the form of 
granules of greater or lesser size and closeness of aggregation. In Amoeba 
and other Rhizopoda, the reaction succeeds less constantly; it always 
avoids the nucleus and contractile vacuole. Inf usoria in conjugation, or 
about to divide, become much more strongly coloured than at other times. 
Some Monads and Flagellata are also coloured by iodine. 
W. S. Kent, Pop. Sci. Rev. iv. p. 293, pis. vii. & viii,, on ^^Infusoria 
as Parasites,’’ mentions and figures some of the most striking instances of 
parasitism in the Ciliate and Flagellate Infusoria ; vide infra. 
Their use of organized food-materials, their purposive locomotion, and 
presence in them of a contractile vacuole are given by the' same author, 
(1) p. 46, as the main points distinguishing the Protozoa from the Veget- 
able Kingdom. 
INFUSORIA. 
2. Engelmann, T. W. Zur Anatomie und Physiologie der Flimmer- 
zellen. Arch. ges. Phys. xxiii, p. 505, pi. v. 
An account of the author’s striking discoveries as to the minute struc- 
