FORAMINIFERA—PSEUDOPODIA 97 



arrangement of the meshes. That this is the case may also 

 be concluded from the fact that all the bridge-like tracts of 

 protoplasm stretching across between the broken fragments ■ 

 of shell have distinctly the appearance of a fibrous network, 

 in which the direction of the fibres corresponds to the 

 direction of the tension. Plate II. Fig. 6 shows a portion 

 of a bridge of protoplasm from a Miliolid. The protoplasm 

 of the bridge was in active movement, streaming to and fro, 

 so that the network was continually being displaced. The 

 formation of a fibrous network, running in the direction of 

 the tension, could also be always distinctly observed when 

 portions of the protoplasm stuck to the slide or the cover 

 glass, forming pseudopodium-like edges as a result of the 

 protoplasm striving to contract itself into a globular form, 

 just as adhering oil-drops do in a similar case. 



In the internal protoplasm of the Discorbince investigated 

 occur great quantities of orange red or brown fat drops, 

 which are viscid, since they become drawn out into the form 

 of spindles under pressure. On addition of 70 per cent alcohol 

 they partly flow together, but they dissolve easily in absolute 

 alcohol. Further there also occur small colourless granules 

 or droplets, which are frequently found in groups, as if 

 turned out in batches. In absolute alcohol they were 

 insoluble, in weak iodine solution they stained but slightly, 

 in acid Delafield's hsematoxylin not very intensely. After 

 staining squashed Discorbinee with eosin, there were to be 

 found coloured granules of various sizes in addition to others 

 such as those just described. 



The study of the living pseudopodia of the above- 

 named Ehizopods everywhere confirmed the result already 

 gained with regard to the meshed structure of the proto- 

 plasm. Wherever larger masses of protoplasm make their 

 appearance in the pseudopodial network, as in the thicker 

 pseudopodia or in swellings of the finer ones ; at the so- 

 called web-like expansions, where a great number of threads 

 of the pseudopodial network unite ; and further in the rim- 

 like expansion of protoplasm which emerges from the shell 

 when pseudopodia are greatly developed, and which sends 

 out the pseudopodia — in all these places the meshed struc- 



7 



