NOTES AND CORRESPONDENCE. 
Cell for viewing Entomostraca.—The motions of many of 
the Entomostraca are so rapid and fitful that restraint 
must be adopted to observe them; but this, in the case of 
many of them, prevents a good view from being obtained of 
their wonderful coverings, and also of their peculiar. move- 
ments. Having a strong wish to see them entirely at liberty 
and to watch the peculiar mode of opening and shutting of 
the carapace, I contrived a small cell, which so completely 
answers the purpose as I hope may justify my bringing it 
under the notice of those interested in those exquisite little 
creatures. The cell is formed out of a piece of glass tube, 
=*,ths of an inch in diameter and 1th of an inch deep, and 
it cemented on the centre of an ordinary glass slide by 
marine glue applied to the edges of the piece of tube, so that 
the cell is quite transparent, and holds just a drop of water, 
but leaving ample room for the active little creatures to move 
freely about. This tiny cell is quite within the field under 
a two-inch object-glass, which is generally sufficient to 
observe all their motions ; but should the inch be required, so 
much of the cell remains within the field that the slightest 
touch of the stage movements suffices to keep the object 
constantly in view. By this little contrivance I have been 
enabled to view Daphnia and Cypridia in a way that I was 
never able to do before, when I had to restrain their motions 
in an ordinary live box.—Josrrn Davison, Newcastle-upon- 
Tyne. 
_ Vegetable Ameeboid Bodies—In Hofmeister’s work on 
the Higher ‘ Cryptogamia’ (Ray Society, 1862), pp. 162-3, 
occurs the following passage, which possesses much interest 
in regard to the ameeboid conditions of. vegetable cells. 
Speaking of the spore-mother-cells of Phascum cuspidatum, 
he says, “ Individual points of the primordial utricle some- 
times exhibit slow expansions and contractions similar to 
