NOTES ON SOME CANADIAN INFUSORIA. 809 
erable movement, bending the body into a circle, or even twisting it 
to form a spiral, but still the movements were stiff and ungraceful. 
The so-called amylaceous corpuscles, (¢) on account of the absence 
of pigment, were remarkably distinct and almost filled the body. 
They were much elongated. Dujardin imagined these structures to 
be carbonate of lime, but the occurrence of no effervescence on the 
addition of strong sulphuric acid at once disproves that supposition. 
As regards their amylaceous nature, some doubt exists in my mind. 
The constant association of starch with chlorophyll in the vegetable 
kingdom, and the similarity between the green colouring of HLuglena 
and that of plants, has no doubt to a certain extent led to the suppo- 
sition. But, as far as I know, no direct experiments as to the 
decomposition of carbonic acid gas by Huglena have proved the 
colouring matter to be chlorophyll, and further, we have here an 
individual containing no green colouring matter, and yet possessing 
large numbers of the corpuscles. Iodine or Iodine and sulphuric 
acid stain amylaceous substances of a dark baownish-purple colour, 
and these bodies when subjected to both these substances presented 
no such reaction, a fact, which, of course, militates rather forcibly 
against the amylaceous theory. 
Guelph, January 25th, 1883. 
PLATE 
n, = nucleus. c. v. = contractile vesicle. v. = food vacuole. ph. = pharynx. 
h. = hood. a. = anal aperture. 
Fig. 1.—Metopus n.s. a. c. v. = anterior contractile vesicle. p.¢. Vv. = 
posterior contractile vesicle. Zeiss obj. D., oc. 4. 
Fig. 2.—Schyphidia inclinans, D’ Udk. v! = food vacuole undergoing ab- 
sorption. Zeiss obj. J., oc. 2. 
Fig. 3.—Cyclidium glaucoma, Ehrh. Zeiss obj. J., oc. 2. 
Fig. 4.—C. margaritaceum. Zeiss obj. J., oc. 2. 
Fig. 5.—Vorticella microstoma, Ehrh. Hartnack obj. 9, oc. 2 
Fig. 6.—Euglena acus, Ehrh. C. amylaceous (?) corpuscles, e. = eye spot, 
m,. = mouth. Hartnack obj. 9, oe. 2. 
