WIIITK HKKR, LAMBI<\ GINGER-BEER 197 



becoming detached, but only so far :is to constitute an independent outer case or 

 sheath enveloping the cells. This jacket either surrounds tho cell alon^ its 



X 



53. Bacterium vermil'orme. 

 a-h. The gradual evolution of the cells and chains into the worm form. 

 / i/i. Development of a aheath increasing on the one side ; the cell-membrane 

 thickens in certain directions only, and not equally all round. Mairn. 680. 



I Hssolntion of such unilaterally thickened, cell-meinbranes into branched 

 forms, the cells bcini: visible at the extremities of th brandies. Culture in 

 uiuuer-beer nutrient gelatin ; ,/. observed at 10 A.M. : //, th>' sume at 4 P.M.. and 

 -:. at 10 A.M. the t'o! lowing day. T.:e parts indicated b '. eo]-re>p 'ml. 



Man'ii. 420. (.Iftcr }\'(ird.) 



entire length or else only along one side thereof, and is in some cases absent 

 The breadth of the cell itself measures about 0.5 /i, and the length 



altogether. 



