^z/-^. 



* '^^h of the '. 



^^^"^^ inclufc 



it had 



ever fe; 



d i ffered from 



'^notatalhi 

 velope; 





St similar size,::: 



* 



t only have 3 Ij 

 nee when eiar^ 



y 



distiiHui 



■JL 



[^r 



colour. The'? 



* 



ergo 



dev 





.rived from ^'■' 



^h with sWI '' 





1 t 



egg' ^ 



ft 



I 



7"^^ BEGINNINGS OF LI IE, 



521 



COCCUS, 



though 



not quite so quickly as the gemmse 

 ult Hydatin£e\ 



No 



scopist than one of these bright-green Euglena carpets, 

 uniformly flecked with its carmine *^ eye-specks/ and 

 irregularly studded with the mysterious egg-like masses^ 

 in each of which inscrutable molecular changes are 

 progressing, destined to terminate in the production of 

 a beautiful specimen 

 complex of the Rotifers. It is indeed a supreme 



of one of the largest and most 



Heter 



marve 



ness the origin of Ciliated Infusoria from aggregated 

 tina, principal: Bacteria, as this latter process transcends that of the 

 irance andbr formation of the minutest speck of living matter from 



colloidal molecules ^ 1 



What fate, however, awaits the various kinds of 

 Rotifers? The finer specimens of Brachion, Hydatina^ 



^ In a few days, after some of the Hydatin^ produced from the 

 peUicle have been hatched, other heterogenetic germs developing from 

 the pellicle become abundantly intermixed with the large egg-like 

 gemmae thrown off from adult Hydatinse. A little experience, how- 

 ever, will soon enable the observer easily to distinguish the former 

 from the latter. The observations which revealed this mode of origin 

 of Hydatinae were made during the months of February and March 

 in the present year. It was, however, long ago pointed out by Dujardin 

 that specimens of Hydatina senta were almost invariably to be met 



with in association with Euglense, more especially during the spring 

 months. 



^ See p. 262. 



