498 Miscellaneous. 
nules senes penetrate it enter upon molecular movements in the 
same way as in the vacuoles of the cells of the chorda dorsalis. 
Phonak i very similar to those described in the cells of the 
Spongille have been observed by M. Lieberkühn in the pd 
bran 1 
execute movements and envelope red corpuscles, exactly as the: 
mæbæ, or a Monas amyli, or an Actinophrys will swallow foreign 
bodies. 
Analogous phenomena also take place in the Se of the 
skin of the tadpoles of frogs and toads. Here also we find large 
vacuoles holding in suspension hp i erac: which move about 
rapidly ; and the cell may present amceboid movements. 
n all the cases just enumerated it is important that we should 
not confound vital phenomena with those which are not vit oe 
olecular movements are now-a-days justly regarded as havin, 
thing to do with life, Eee it is generum. sudor that the puoi 
moyements of cells are a phen M. Lieberkühn rejects 
this notion as erroneous, ie oes T oba Pranon made upon. the 
gemmules of sponges, that iod sig may manifest amoeboid move- 
ments. When a little glycerine or common salt is added to the 
water in which a Spongilla is vine the body of the Spongilla con- 
tracts Sey, loses its transparency, and all vital manifesta- 
tions cease entirely, never to D If a gemmule be crushed 
in glycerine, the ung escape it as a mass of perfectly motion- 
less les e cells are ny dead, and quite incapable of 
being developed like the cells of a gemmule crushed i in water. And 
nevertheless these dead cells present amceboid movements as soon 
eford. der gesammten Natu wu Marburg, Band ix. 1870); Bibl, 
Univ. October 14, 1870, Bull. Sei. pp. 158-160. 
On the Heptilia of the Triassic heir aan d ed Eee Region of 
nited States. By P 
Prof. Cope es some observations on di ne of the Triassic 
formations of the Atlantic region of the United States. He observed 
that thirteen species had been described and referred to ten genera. 
None of these had been referred by their describers to their : appro- 
priate orders, and he had undertaken an investigation of them, 
having for its ue such reference, as wellas the determination of 
the closer affinities 
Three of the species he proved to be Dinosauria. He had already 
assigned Megadactylus and Bath; ygnathus to this division, and would 
now add Clepsysawrus, Lee, from evidence derived from an ischium 
