04 
THE OCEAN WORLD. 
the conclusion that the colouring matter was deposited in many of tb® 
surrounding dimples. Ehrenherg thought that each of these dimple 
was a stomach, and that the introduction of the food into the interim 
of these reservoirs, as well as the evacuations, were produced by mean® 
of an intestine around which these stomachs are arranged. In som® 
cases he even thought he could distinguish the outlines of this infesting 
canal, and its connection with numbers of ampula or bladders. Gen 1 '' 
ralizing the conclusions drawn from his observations, in short, we fk 1 ^ 
that his class, Infusoria, Embraced two very different forms of ailin'^ 
life, which he divided into Infusoria , Polygastrica, and Rotifer a, tb® 
latter division including those known as Wheel animalcules ; th® 
Polygastrica being so called from his idea that the typical for®* 
possessed a number of stomachs. In some, Ehrenberg counted foi ,r 
stomachs, an organization which brings these microscopic beings i» t0 
a strange kind of comparison with the ox and the goat. In others k® 
counted two stomachs. 
Other observers were not slow in raising objections to these views- 
Dujardin, especially, was much opposed to the batch of stomachs attri- 
buted to these creatures by the German physiologist. He attempted 
to establish the fact that the coloured globules which appeared i" 
the bodies of the Infusoria, while subjected to a regimen of carmine a®* 
indigo, are not confined by a membrane ; that is to say, they are 
contained in intestinal sacs. According to Milne Edwards, “ they lll ' e 
a species of basins, constituted,” ho says, “ by the alimentary matte* 
with which each is gorged, united into a rounded pasty mass, where 
could no longer be dispersed, but would continue to advance, still p* e ' 
serving its form. We have, in short, seen these spherules changh# 
their places, and passing one another in then* progress from the moutb 
to the intestinal canal. Ihat they could not do this is evident, if TOS)$f 
stomachs were attached to the intestinal canal !” 
This opinion, due to the patient and precise studies of Dujardk 1 ’ 
has been adopted by most naturalists of eminence. Besides, this learnt 
microscopist does not admit that there was in the sarcodic mass 
Infusoria any pre-existent cavity destined to receive the food. I» 8 
word, ho does not recognise any stomach whatever. This view 
the extreme simplicity of structure in the Infusoria has, howeve*’ 
met with much opposition. To accord thorn neither four no? t*° 
stomachs, it is not necessary to deprive them of the organ altogether 
