vessel containing sea water, ceaseil altogL'tlier to 

 emit liglit, or emittedlt but sparingly wliile they 

 remained at rest. Ob tlis wterj litmsver, hmng 

 Kgltated, or when one of tlie masses of animals 

 wa- t;[kv\\ into the luind, tlic wliol*' iK'canie 

 instantly illiuninated by myriads of I>ri^lit dots, 

 muck resembling in line the points on the elytra 

 of d diiai?de^d beetle {CurcuUo hnper talis, Fab.) 



Th^ Vymmtmt ikm eiiy«Iop4&d ttirot^ItoM Its 

 whole extent in a flame of brij-iit ]tliosplio]?esoeaat 

 light gleaming" %vitli its peculiar hni\ ])resented 

 a most splendid spectacle ; the light shed by it 

 was sufficient to render objects distinctly visihl<j 

 ill ^^jirt distil otKigm&edatk 1^0^ If loBg 



re^l|li€i i» band, or retumcdi to a^uieseent 

 state in tlie water, t\\v hnidnons spots gnidu;dlv 

 faded, ami no light was \ isi!tl(' nntil tin- animal 

 was again disturbed, when the ilhuuination in- 

 stantly r6twrated ^^rilll vivid s^teiidour. 

 After death it emitted no light. 



The nuiss uf Pyrosoma, of the usual eylin- 

 drieal form and gelatinous snl>stanee, was ;ibout 

 four iiichcij in iengtii ami one and a half in 

 f^iTcmlljei'esied* The tube, passing along- its 

 middle, is desenM m b&isig 0|texi at both ends; 

 the orilieo ;it tlic broader extremity being mtieh 

 Ivetter delined in its eii'iaditr form, iargrr. and 

 more dislinet than that of the op])osite euii. 



