AND CONTENTS OF THE MOUTH. 425 



fragments always exhibit a cohesion of the single particles, and 

 their brilliant colouring becomes more conspicuous with aniline. 

 We remember having often found similar fragments in sputa ; but, 

 not then knowing their nature, we overlooked them. We also 

 remember that some sound ears, or fragments of the same, were 

 found mixed with many minute ears in fructifications upon small 

 flakes of urethral mucus, as we mentioned in the previous Memoir. 

 We may, however, state that, in the preparations of the dental 

 patina, ears of this sort are scanty in comparison with those of 

 the preceding form. 



In considering now those more robust and conspicuous forms 

 of fructification, the mind tries, through analogy, to connect them 

 with the process of fecundation, and finds, although indirectly, its 

 existence is confirmed. In the preceding Memoir, we have des- 

 cribed some pseudo-inflorescences in tufts, having points varying 

 in shape and size, which we held to be future spindle-like bacilli 

 {Bacillus tremulus of Rappin) and future comma, or serpentine 

 bacilH, destined, after being dissevered from the stem and becoming 

 free, to perform the functions of spermatia or antherozoids. We 

 gave the reason for such hypothesis, as we also pointed out the 

 likeness of those elements (supposed male organs), with the sper- 

 matia of certain well-known fungi, like Sphcerella sentijta, Fumago 

 salicina, Apiosporium citri, etc. 



The antherozoids or sperviatozoids in sea weeds, and the sperma- 

 tia in fungi were considered as elements of fertilisation. The 

 first {migratory filaments, spiral filaments, seminal corpuscles), now 

 cylindrical, now ribbon-shaped, furnished with cilia and endowed 

 with spiral movement in various directions, are originally contained 

 in a cellule or male organ {antheridium). The spermatia cor- 

 puscles, oval or in rods, straight or curved, also very motile, like 

 the analogous forms of the mouth, were, nevertheless, held to have 

 no cilia. They are originally sometimes contained in an appro- 

 priate cellule or male organ {spermogonium), sometimes they grow 

 freely on the apex of the filaments, and get dissevered simply 

 through disjunction. In our parasite we thought, at first, that the 

 fertilising elements belonged to this last type, and were formed in 

 a free state on the stems ; but we shall see, by and by, that perhaps 

 even they originate within apposite sheaths, and therefore may be 



International Journal of Microscopy and Natural Science. 

 Third Series. Vol. V. eb 



