PLASSOMYXJNEAE 113 



is, I think, extruded to construct the capsules, &c. that are 

 formed in water-cultures. 



In a valuable piece of work noticed below on the method 

 of filtration of the virus of molluscum the authors begin 

 with the premise : "It has been conclusively demonstrated 

 that they (the molluscum corpuscles) represent peculiar 

 forms of epithelial degeneration ; " and as the basis of this 

 belief, they refer to " the excellent pathologic studies of " 

 here follow five names, none of which I have found in any 

 list of those who have added to our knowledge of Phyco- 

 mycetes and Mycetozoa. The authors who took great care 

 in making one set of experiments evidently omitted the 

 simple precaution of examining for themselves by the best 

 methods the minute structure of the molluscum tumour. 

 It is in this way that errors are perpetuated. 



Further Cultural Results. For the material on which 

 some of my latest cultural observations were made, I have 

 the pleasure of thanking Dr. G. Fernet, physician in charge 

 of the department for diseases of the skin at the West 

 London Hospital, and the house-surgeon, Dr. Barker. I 

 have also to thank Dr. Beverland and Mr. H. K. Shaw, 

 resident medical officers at the Hampstead General Hospital, 

 for helping me with the preparations. The lesions were 

 placed in covered Petri dishes, one without any addition on 

 a cupped slide, the others on tea-leaves, as described in 

 Part IV, with the addition of a sterilised solution of 

 glucose and peptone, each 0*2 per cent., which had been 



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