152 ABSTRACT OF THE INFUSIONSTHIERCHEN OF EHRENBEKG. 



Caput Medusae ; Torula Tritici ; Torula olivacea ; Torula frutigena ; 

 and several others. 



The description of the Mycoderm of Tinea, by M. Gruby, above re- 

 ferred to, so accurately corresponds with the observations I have myself 

 been enabled to make very lately, that I have thought the addition of a 

 few figures of the appearance presented by this parasitic growth under 

 the microscope (see Figures, p. 148), would be sufficient to prove the 

 truth of the position, that the disease does in reality consist of such a 

 growth, and that this growth corresponds in every respect with the 

 characters of Persoon's genus, Mycoderma. I have not, however, been 

 able to perceive any movement in the globules themselves, as appears 

 by M. Desmazieres' observations, to have been the case in other species 

 of this genus. There is, however, always to be observed in the fluid 

 with which the Mycodermata may be mixed, a great number of actively 

 moving molecules or minute Infusoria. 



This Mycoderm is readily seen by placing a fragment of a crust of 

 Porrigo, moistened with water, between two glasses. The younger 

 crusts present many of the small branched filaments and separate cor- 

 puscles ; the larger crusts contain more of the beaded filaments, and in 

 all, the Mycodermata are found mixed with epidermis scales. 



XXXII. AN ABSTRACT OF THE " INFUSIONSTHIERCHEN" OF 



EHRENBERG. No. 4. 



By W. Hughes Wiltshire, M.D.,M.B.S., Physician to the 

 Fore Street Dispensary, #c. 



Genus Doxococcus. 



EYE, projecting lip, and tail not present; position of oral aperture 

 varying with respect to the direction towards which the animalcule is 

 swimming ; motion rolling, similar to the clusters of UVELLA ; spon- 

 taneous self-division simple, perfect, or none. In other respects they 

 resemble the Monades. 



Four species are known : one is of a brick-red colour, another of an 

 obscure green, a third whitish with green spots, and the fourth is 

 colourless. 



Genus CHILOMONAS. 



Eye and tail not present ; projecting lip present ; mouth lateral or 

 oblique, provided with cilia (?) or with a very delicate filiform proboscis 

 (double ?) ; spontaneous self-division perfect, or none. 



