Geology and Natural History. 211 
not flourish in the range of river deposits. The facts correspond 
with those observed by Tyndal, who detected the particles in the 
sirface-water of the Mediterranean by electric light, and attrib- 
uted the deep blue color of the waters, as well as of those of Lake 
Geneva, to their presence. 
e facts are stated to explain to geologists how non-fossilif 
essrs. King and Rowney is considered in detail, and in closing, 
the following recapitulation is given of the points they consider as 
established :— 
‘ pass in 
ariously subdivided states, and etching out the resulting portions 
ins an 
2) 7h ch we hol 
be the calcareous matrix of the above lobulated grains, &e.) 1s 
“ompletely paralleled in various crystalline rocks—notably marble 
Containing i 
the pre-cited marbles. i 
i) The “chamber caata” being composed occasionally of 
loganite and malacolite, besides serpentine, is a fact ore a WO 
of favoring their organic origin, as supposed, must be held as a 
z n produce 
Prescribed order, 
(5.) Dr. Giimbel, observing rounded, cylindrical, or igri 195 
of coccolite and pargasite in crystalline calcareous marbles, 
