142 Duhlin Microscopical Club. 



Section from Oalf's Stomocli. — Prof. Cunnirsgliara showed a sec- 

 tion from a calf's stomach displaying the villi. 



Presumed neiu Heliozoon discovered hy Mr. Bolton near Bir- 

 mingham. — Mr, Archer showed a sample from a gathering kindly 

 forwarded to him by Mr. Bolton, of Birmingham, announced to 

 contain a new and minute form of Heliozoon ; but after a careful 

 search through the material he had failed to find anything living, at 

 all coming up to the expectation formed from Mr. Bolton's accom- 

 panying description. He had, however, met with, and now drew 

 attention to, an organism which might, casually viewed, be regarded 

 as a Heliozoon ; but whatever might be the real nature of this, it 

 could not be set down as appertaining to that group. This was 

 globular, rather less than yy^ inch in diameter, contents green, 

 and rather thick-walled, and it was outwardly beset with nume- 

 rous short, indistinct, subtriincate, subpellucid papillae. Thus its 

 radiate or stellate aspect lent this organism a certain amount of 

 deceptive resemblance to a Heliozoon ; but it could not be the 

 organism referred to by Mr. Bolton, as it only distantly resembled 

 his drawing. The gathering contained a quantity of Euglence 

 passing into a vegetative condition by repeated self-division, and the 

 conjecture presented itself, Might this globose papilliferous body 

 represent an ultimate state of division of a Etiglena, passed now 

 into a globular thick-walled subspinulose resting form ? But there 

 was, further, in the gathering now and again to be detected an 

 empty ceU-wall, very thin, very hyaline, of a globular figure, and 

 bearing a number of longish setae or bristle-like hyaline spines, not 

 unlike, only that these were notably more numerous, an empty skin 

 of an example of the alga Mr. Archer had on a former occasion 

 brought before the Club as Oocystis setigera. This too had the 

 oiitline of a Heliozoon, but no sarcodic contents with green chloro- 

 phyll-bodies within, as depicted in the sketches, were present, and 

 the longish bristle-like radii were clearly not pseudopodia, but rigid 

 setae. Here, then, was yet another object that might be taken at 

 first glance for a Heliozoon, but it was obviously merely an empty 

 cell-wall of great tenuity, not a globose sarcodic mass, however 

 pellucid. It will be seen that it might be rather the evacuated 

 cell-wall of some spore, to a certain extent of course calling to 

 mind the zygospore of some Desmidian like Staurastrum dejectum, 

 &c. ; but it was, on the other hand, much more thin- walled and 

 the radii were more slender and delicate than the empty cell-wall of 

 such a zygospore, viewed under the same power, would appear to be. 

 He had therefore missed what Mr. Bolton wished him to see ; but 

 it was nevertheless curious that, in so small an amount of material, 

 two seemingly distinct things, superficially somewhat mutually 

 alike, and both at the same time superficially like a minute Heliozoon, 

 and both apparently novel in themselves, should occur. Mr. Archer 

 really did know a minute Heliozoon, green, non-pulsating, with 

 very slender pseudopodia, the green granules rather small and 



