138 
and stomachs; and Claparede has since then maintained 
that the polypides should be considered as organs of the 
Bryozoa. 
In whatever way we may express ourselves the nature of 
my recent investigations has impressed upon me the fact of 
a certain connection of the polypides, and we have 
seen that the polypide is not necessarily a descendant 
of the zooecium, as it may grow from the funiculus. I 
further think that the zooecium may grow from the same 
organ. In Cellaria one or more chitinous tubes are thrown 
out from the oral aperture, and through this the funiculus 
passes, and I believe that it is from this, and not from the 
chitinous tube, that the zooecium and then the polypide is 
formed. This I can only say with great reserve until I 
have the opportunity of watching the growth of this or a 
similar genus ; or I may perhaps better say that I point this 
out as a line of investigation for anyone at the sea-side. 
The early stages of such organs as the avicularia radical 
fibres, ovicells are the same as the early stage of the zooecium, 
so that the “cystide” (Nitsche) of each is, according to all 
theories which recognise the zooecium as an individuum, to 
be looked upon as of the same value, each being also an 
individuum. 
Perhaps in every scientific subject the man who has 
enteied into it feels how much there still remains to be 
done, and certainly the present could be no exception, as 
there are in this field of research many parts of virgin soil 
requiring the co-operation of many workers. 
Mr. Plant, F.G.S., exhibited specimens of auriferous 
quartz from Australia and North Wales, showing on their 
surfaces certain changes and metallic growths, which had 
taken place within the last ten years. He also referred to 
a paper recently read by Mr. T. A. Readwin, F.G.S., at the 
Mineralogical Society “ On Mineral Growth at ordinary tem- 
peratures and under ordinary circumstances.’’ 
