Reviews—Dr. Otto Kahn’s Die Urzelle, ete. 87 
matter and style. For instance, a letterweight of Saxony Serpentine 
was the cause of the next discovery. Bluish spots in it attracted 
attention ;, “ how astonished was I to find in the greater part of it 
plant-forms 1 to 2 centimétres.” The conclusion follows without 
further delay—‘“‘the greater part of Serpentines, particularly the 
Bohemian and Saxon, are nothing but Alge beds.” The plant which 
lived among this water-deposited Serpentine is called Ophthalmia 
Hochstetteri. Surely the eye affection has been here attributed to the 
wrong person. 
But further wonders follow. The work was just closed for the 
second time when it was remembered that some Canadian rocks 
were still unpacked; to this happy memory we owe the discovery 
that “all the Laurentian Gneiss is nothing but a great plant 
deposit.” ‘Most of these Algz are visible to the naked eye.” One 
is named Dufferinia, another Victoria (a botantical inadvertence), 
and another Selvynia. 
Again the work was closed, and it was on the way to the press 
when the following train of thought occurred: “If Laurentian 
Gneiss is a mass of plants, why should not our Gneiss be so? And 
if our Gneiss is, why not Granite and Porphyry?” It was the work 
of a single night, but the result comes out as expected, “all Granite 
is nothing but plants, no stony matter in it, all plant; Mica and 
Hornblende are the calyx-cells, Felspar the substance of the plant. . . . 
Quartz forms mostly brood-cells. . . . Porphyry contains living 
plants . . . and is the detritus of primitive rocks.” The plant in 
Garnet rock is called Granatina Heeri. That in Carrara marble, said 
to be a meter long, is named Marmora Darwini. Judging from the 
sketch it does not seem to consist of more than a score of so-called 
cells! 
Then follow some petrological notions, we extract the following: 
“Jn the Polariscope the banding taken for Oligoclase are horizontal 
growth-stripes of cells. . . . Graphic Granite is felspar with won- 
derfully fine quartz-plants.... Basalts contain plants. What 
Zirkel calls Nephelinbasalt, are stem-cells of a plant, Mycelium 
Zirkeli. Fluidal structure is therefore Algz cells. Olivine in basalts 
are plant cells . . . . most basalts are water products. . . . Leucite 
fills calyx-cells . . . . the dots in the small crystals are probably 
spores. Pitchstone is a plant-rock, and not volcanic. It is incon- 
ceivable that all this should have been overlooked till now.” The 
above is verbatim. 
The sedimentary origin of Granite, Gabbro, Felsite, and Basalt 
having been thus settled, the author was proceeding to press—he 
innocently again informs us—when he found some slices of meteoric 
stones among his collection. Guided by the set purpose of finding 
organic remains only, he had put aside as hopeless these meteorites, 
but finally he determines to examine them. The first one with 
much Olivine had apparent plant remains; the second, the Knya- 
hinya fall, of 6th July, 1858, had undoubted plants—forthwith 
named Urania Gulielmi. Algze, in another, were found in conjuga- 
tion, and are termed Heliolw Caroli. The Hainholz meteorite yields 
