376 THE RED-LINED CHRYSAORA. 



centre, and progressed slowly through the water, with a 

 quivering jerking motion, exactly like that of many of 

 the compound Monads. I could not detect the cilia 

 which produced this motion, hut infer their existence. 

 On pressure heing applied to flatten the glohule, each 

 component granule was seen to be itself composed of 

 a multitude of minute granules. The pressure being 

 heightened the primary granules at length separated 

 from each other, leaving for an instant angular chan- 

 nels between them, w^liich appeared to be occupied 

 with a very subtile gelatinous fluid ; and presently 

 these granules themselves yielded to the pressure, 

 and dissolved each into a vast number of pellucid 

 secondary granules of almost inappreciable minute- 

 ness. 



On submitting to pressure portions of the tentacles, 

 I found the walls rather thick in proportion to the 

 tubular cavity, and moderately densely studded with 

 filiferous capsules of great minuteness. Their form 

 was perfectly oval, the smaller end being that from 

 which the thread projected. The largest were about 

 2-g^ inch in length, the smallest about g^ inch, with 

 the thread occupying an oval cavity about two-thirds 

 of the entire volume. The projected thread from one 

 of the largest reached to about -^ inch, or more than 

 a hundred times the length of the capsule ; those of 

 many of the smallest on the other hand were not more 

 than ^^ inch in length, or about eleven times that of 

 the capsule. I could not see the least appearance 

 of barbs, hairs, or imbrications on the threads 

 (fig. 4. represents a large capsule, magnified 300 

 diameters). 



