MOEPHOLOGIOAL VARIETY OF BACILLUS ANTHEAOIS. 267 



necessity of an additional series of terms descriptive of the 

 grouping of the aggregates; that is to say, we require terms 

 describing the combinations of the second order formed by 

 the union of those combinations of the first order, which we 

 have called '^aggregates of plastids." Of such '^ combinations 

 of aggregates " the present may be described as " funicular." 



Thus, in a systematic way we should give the following 

 description of fig. 4 a : 



" Plastids. — Shape, microbacillar ; substance, homoge- 

 neous, clean ; colour, wanting. 



" Aggregates of plastids. — Linear. 



"Combinations of aggregates. — Funicular, the filaments 

 twisted and recurrent." 



