114 BACTERIA. 



of them multiplying by budding, some of them also giving 

 rise to the formation of mycelia. It is of course quite possible 

 that such a classification may not hold good, as it has been 

 suggested that some of the torulse could not be definitely 

 brought within it, as far as non-sporulation is concerned. 

 Hansen describes seven species varying in size from i-S to 

 8/i ; some invert cane sugar ; some give rise to scarcely 

 a trace of alcohol, whilst others produce as much as 6.2 per 

 cent, of alcohol. They occur as spherical or elongated cells, 

 and cannot be distinguished by the microscope alone from 

 the round cells of the different species of saccharomyces. 

 As a group they have not much action on maltose, and only 

 some of them affect dextrose. 



