GEMMULE OF LEPRALIA. 219 



and repeatedly. Presently on the restraint being 

 continued, the globule threw out from different parts 

 of its periphery, long lancet-like flexible pointed 

 bristles twice as long as the cilia, with which it 

 pushed here and there. These lancets I perceived 

 were ordinarily bent at an acute angle near their base^ 

 so as to lie flat on the body unperceived ; and I think 

 there were many of them, for I fancied I saw the 

 minute basal parts of many that were so concealed. 

 Those that were exj)osed were ever and anon suddenly 

 bent up again and so concealed, and again protruded. 

 After examining it awhile, I carefully put it without 

 injury into a glass of sea- water alone. Its diameter 

 was about -^0^^^ i^^^^ (^^^ Plate XIIL Fig. 1). 



I afterwards saw another in the original vessel, and 

 both this and the former had the habit of coming 

 into contact with the side of the vessel, and continuing 

 in one spot for a considerable while, (half an hour or 

 more) not moving a hair's breadth from the place, and 

 yet evidently not adhering, because gyrating uniformly 

 all tlie time by the ciliary action. One of these I lost, 

 and the one that I isolated got into a comer of the 

 cell, and decayed. But carefully looking at the origi- 

 nal vessel, I found some half a dozen scattered over 

 the sides, but in a more advanced condition. These 

 were all firmly adhering to the glass, and that so 

 inseparably that the most careful touch of a pin's 

 point to detach one, tore it into a shapeless mass of 

 broken flesh. The youngest of these had taken the 

 form of a flattened oval, or long hexagon, with one 

 end more pointed than the other, in which the redness 

 was curdhng and separating into masses. The others 



