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Dr C. Vogt on the Animalctiks of the Bed Snow. 243 



getlier with the Philodina, in the crevices of a polished rock 

 below the glacier of Rosenlain, in the vicinity of Guttannen, 

 and even on the borders of the lake of Neuchatel, where the 

 Fhilodina roseola with coloured eyes is very abundant. 



After what has been stated, if 

 there really exists Protococcus in- 

 dependently of these eggs (which 

 does not appear to me likely, at 

 least in the red snow of the Alps), 

 it must prove that their identity 

 is such as to be mistaken the one 

 for the other. Future researches 

 may probably elucidate their dis- 

 tinguishing characters ; for M. Joli, 

 in his work on the salt-water 

 ditches of the south of France, re- 

 gards equally as Infusoria those 

 microscopic bodies which Turpin 

 determined as belonging to the 

 genus Protococcus. 



In the accompanying figure, 1, 

 the Philodina rosea* oi the red snow, with the different forms 

 of its eggs, is seen magnified 360 diameters. The animal is 

 seen from above, the body extended as in the ordinary act of 

 progression on the bottom or side of the vessel in which it is 

 kept. The three principal regions of the body are very dis- 

 tinct : 1. The head and neck, with the different organs of 

 sense, and the commencement of the digestive system ; 2. The 

 trunk, which is nearly cylindrical, and is enveloped in a fur- 

 rowed cutaneous carapace ; 3. The articulated feet. 



The anterior extremity, with its cilia, is expanded as in the 

 act of touching ; the rotatory organs are contracted : a little 

 posterior to these may be seen in the median line the respi- 

 ratory tube, which is equally contracted ; when spread out it 

 is much longer, and is furnished at its extremity with stiff 

 cilia. Behind this tube the eyes are met with, which are 



* The animal is here represented only one-half the size as in the original 

 plate,— the eggs are the full size. 



