494 FOBAMINIFERA *. — ORBITOLITES. 



377. The idea of the nature of the living occupant of these 

 cavities which might be suggested by the foregoing account of 

 their arrangement, is fully borne-out by the results of the exami- 

 nation of the Sarcode-Body that may be obtained by the macera- 

 tion in dilute acid (so as to remove the shelly investment) of 

 specimens of Ovbitolite, which have been gathei-ed fresh from the 

 Sea-weeds to which in the living state they are found adherent, and 

 have been kept in Spirit. For this body is found to be composed 

 (Fig. 251) of a multitude of Segments of 'Sarcode,' presenting not 



Fig. 251. 



Composite Animal of simple type of Orbitolites complanatus :— 



c, central mass of sarcode ; b, circumambient mass, giving off 

 peduncles, in which originate the concentric zones of sub-seg- 

 ments connected by annular bands. 



the least trace of higher organization in any part, and connected 

 together by Stolons of the like substance. The Primordial pear- 

 shaped Segment, a, is seen to have budded-off its Circumambient 

 Segment, 6, by a narrow footstalk or Stolon ; and this circumambient 

 segment, after passing almost entirely round the central one, has 



spiral than in a radial direction ; between these two plans, there is 

 every variety of gradation ; and even where the Spiral is most distinctly 

 marked in the first instance, the additions soon come to be made in Con- 

 centric Zones. 



