420 M. Miiller on Substances inclosed in Mochastones. 



Cy d, f, g, kj i, k, I, n lie mostly at the side of the yellow field 

 at (a); the remaining figures in the midst of the chalcedony, which 

 they completely fill. 



The first appear as large, globular and spiral, the latter as more 

 or less oval ; these again as reddish yellow, those as almost tile-red 

 bodies. Both have the same peculiarity, that they assume the 

 form of a mushroom : e } f y m, o, p. There occur also frequently 

 thin, skinny, banded remains, as at g. Their size is very variable. 

 At the first glance all these bodies have so much resemblance to 

 the fruit of Characea, that one might feel satisfied in considering 

 them as such in reality. The banded spiral divisions bespeak as 

 much ; yet it does not appear probable, as the bodies, so fre- 

 quently confined to a small space, lie collected together in heaps. 

 No single organic remain is found amongst them, and it is be- 

 sides inconceivable that, supposing them to be the fruit of Charts, 

 not a single vestige of the stem should remain. 



That amongst them clearly younger individuals and of a similar 

 formation are perceptible, may afford an argument that they could 

 be assigned to the animal kingdom. I have not observed extre- 

 mities, feet, &c. 



I cannot venture to say more on this matter, but perhaps the 

 same bodies may be found by some other observer under other 

 peculiar circumstances, whence we may fortunately be able to 

 draw some conclusion. Found in Siberia. 



8. Figs.S §■ 11. — Fig. 11. I have given in fig. a — k the magni- 

 fied representations of the very isolated red dots at (a) in a chal- 

 cedony likewise from Siberia. They may be thought very con- 

 fused, but they are true copies of what I saw. The single dots 

 are of such a size that their outline can be distinguished by the 

 naked eye. I have figured almost every dot which lying near 

 the surface could be distinctly observed, and almost every one bore 

 the marks of powerful destruction. 



In spite of this inroad on these so remarkable and beautiful red 

 bodies, it is not difficult to form a clear notion of the original 

 form from the individual fragments. 



The body was circular, as appears easily, and the figures /, d, g 

 seem to give perfect assurance of the fact, since only a round body 

 could be pressed so flat, as is the case in both these instances. 

 Some other dots which I found showed the same form and struc- 

 ture, so that I considered it superfluous to figure them here for 

 further confirmation. I give exactly what I found. 



The circular body was moreover furnished with an epidermis, 

 as is clear from d, g, h. This seems to have been dark red. It 

 was filled with a loose marrow (b — k) inclining from orange to 

 purple-red. Where this was extremely compressed the colour is 

 of course lighter, in consequence of the mass being thinner. This 

 is illustrated by b — e. 



