8 AKT. 6. Y. YEXDO : 



body. In Cortinellus edodes (exp. 45) I observed that the upward 

 conduction was more extensive to the downward one and that the 

 transverse conduction occurred within a certain Hmit. In Usnea 

 barbata v. scahrosa (exp. 46), no conduction of hthium was observed. 

 As regards algae (Oltmanns, 15), most of them are too compactly 

 structured and their cells filled with sHmy or watery contents, 

 so that there exists in them no space to receive injections, making 

 them unsuited for injection experiments. Eisenia and EcUonia were 

 employed in my experiments, since they have rather loosely con- 

 structed medulla. 



The algae were examined immediately after the injection, and I 

 have found that hyphae, siebhyphae as well as the slimy substance, 

 were well tinged in the injected part of the medulla ; and in the 

 ease of eosin injection the contents in the siebhyphae were espe- 

 cially deeply coloured. 



The algae which were subjected to injection were kept in a 

 sea-water reservoir at the sea-shore during the experiment. 



The results indicated that the injected pigment gradually dis- 

 coloured in the course of time, and after a few days it was 

 found very slightly in the injected parts, the hyphae as well as 

 the shmy substances were almost entirely gone, but frequently a 

 few inner rows of the cortical cells were found slightly tinged. In 

 using SO.Cu (exp. G3) and LiXOj as injection material, similar 



results were obtained. 



Bryopsis pulmosa, a unicellular plant, may be worth investiga- 

 tion, to observe the conduction of injected substances. The injected 

 colouring matter was visible through its transparent cell-wall ; the 

 arrangement of the contents was disturbed and well permeated 

 by the injected solution. The injected plants were kept under 

 sea- water, and observations were made at intervals. 



