Arcjeier — 0)1 Chlamydomyjca Lahyrinthuloides. 155 



that "vrhich it left behind; but it might not be nnreasonable to suppose 

 that in this way the slender filamentary tracks, reaching far and wide, 

 may be simply the medium of transpoi-ting to, and depositing these 

 spindles within, the tissues of the adjacent submerged plants, in the 

 way which we have seen it to occur, there to develop. 



As to the second objection, that the individual spindles do not be- 

 come specially encystccl, but the whole of them, along with the other 

 granular stnictures in common, might be only of secondary import- " 

 ance ; more cogent, indeed, is it, perhaps, that they have not been seen 

 to divide, but after all it is a probable way of their increase. 



The remaining objections seem rather to relate to questions of 

 habit, or might be considered in themselves as touching upon points 

 rather of mere "specific" signification than of higher import. 

 Cienkowski's forms might yet prove to be parasitic ; they at least 

 grow upon and siuTound the adjacent algae. Cienkowski's forms took, 

 some twenty-foiu- hours on a " slide" to grow up into a "tree" like 

 that shown in his figures ; the present form has often presented a 

 spectacle like that shown in PL 14, in less than as many minutes. 



If the spindles in my form were nucleated, i. e. if they represented 

 " cells," not merely plastic, homogeneous, little masses, the presents 

 organism would seem to.be necessarily relegated to the Labyrinthuleae, 

 apart from the other points of difference. 



The "filamentary tracks" in Cienkowski's forms and in the present, 

 organism seem wonderfully to resemble each other, so much so that, 

 whatever be their mode of evolution, it is probable this is alike in all. 

 As has been seen, Cienkowski ascribes the origin of the filamentary 

 tracks to the spindles themselves — in other words, a spindle must exist 

 before a track ; the former must first exude or give off the filamentary 

 substance ("faserige Substanz"), then pass along (?), or in (?), or 

 between (?), the threads so produced, but which the author leaves an open 

 question. But this does not, seemingly, quite coincide with his 

 description of the basic substance, a " zarte, feinkomige Einden- 

 Substanz," often forming at the periphery a thin enveloping layer, 

 where again its substance is spoken of as either " ganz hyalin, einfor- 

 mig" or as showing a "sehr feine faserige Structur," and where it has 

 the power to give off branches, of a glassy appearance, gradually 

 tapering off; these may be of a uniform appearance, or show a very 

 fine fibrous (faserig) structure, and at the margin sometimes running 

 off into very thin, scarcely perceptible rays, sometimes fringe-like, at 

 others tufted, and all this seemingly without the direct presence of 

 any of the spindles. These fijie linear threads seem to be nothing 

 more nor less than the " tracks," as yet very short. In one form the 

 tracks, if I mistake not, are given off independently of the spindles, 

 but they are no sooner there than spindles are seen thereon (or there- 

 in ?). As I mentioned as regards my fonn, and as will be seen in the 

 figure, a more or less reticulated arrangement of the "spindles" (not 

 noiv of fusiform figure) may be seen in the interior of the central mass, 

 suggesting their arrangement along "tracks" enveloped by the general 



