A434 Scientific Intelligence. 
ish species. To illustrate MacLeay’s theory of a quinary and circular 
arrangement, the case may be put thus. 
Lagenade. 
: 1 A 
Sj z 
ag ° 
3 % 
ay wm, 
ws 3 
= 
%, 
on 2 G oe” 
% Pals 
% gs 
¢ 
The first family is connected by the typical genus Lagena with the 
second, and by Entosolina with the fifth; the second is united with the 
Whether these singular and little-known animals are Rhizopods, or 
belong to the Ama@ba, remains yet to be satisfactorily made out. 
n the presence of Diatomacea, Phytolitharia, and Sponge Spic- 
ules, in Soils which support Vegetation; by Wittiam Grecory, M.D., 
F.R.S.E., Professor of Chemistry, (Ib., p. 219.) —Ehrenberg, in his 
late work, ‘ Mikrogeologie,’ has stated that in specimens of soils from 
all parts of the world, he has found many microscopic organisms; he 
but it also contained much organic matter, of a brown or red color, n- 
le in acids, which, if necessary, might be destroyed by ignition, 
when it would leave a trifling ash. 
In every case I found Diatomacee in the residue, as well as . 
ithari onge spicules, apparently of freshwater sponges, We! 
less ied sips, ha seauitek in aay. <7 a few cases, where the acid 
caused effervescence, there was calcareous matter present, but in 
this was not the case. . es eae 
