. Relics of primeval life, beginning of life in the dawn of geological time. Fig. 55.—ArchiEospherin-x from Pargas in Finland. (After Giimbel.) (Magnified.) seaweeds. These observations Giimbel has ex-tended into other localities in Bavaria and Bohemia,and also in Silesia and Sweden, establishing theexistence of Eozoon fossils in all the Laurentianlimestones of the middle and north of Europe. Giimbel has further found in beds overlying theolder Eozoic series, and probably of the same agewith the Canadian Huronian, a different species ofEozoon, with smaller and more contracted cham-bers, and st
. Relics of primeval life, beginning of life in the dawn of geological time. Fig. 55.—ArchiEospherin-x from Pargas in Finland. (After Giimbel.) (Magnified.) seaweeds. These observations Giimbel has ex-tended into other localities in Bavaria and Bohemia,and also in Silesia and Sweden, establishing theexistence of Eozoon fossils in all the Laurentianlimestones of the middle and north of Europe. Giimbel has further found in beds overlying theolder Eozoic series, and probably of the same agewith the Canadian Huronian, a different species ofEozoon, with smaller and more contracted cham-bers, and still finer and more crowded canals. This, CONTEMPORARIES OF EOZOON 213 which is to be regarded as a distinct species, or atleast a well-marked varietal form, he has namedEozoon Bavariciim (Fig. 56). Thus this early intro-duction of life is not peculiar to that old continentwhich we sometimes call the New World, butapplies to Europe as well, and Europe has fur-nished a successor to Eozoon in the later Eozoic or. Fig. 56.—^Vf/^ v/ of Eozoon Bavaricum, xvith Serpentine, from the Crysfalline Limesione of the Hercynian primitive Clay-slate Formation at Hohenberg; 25 diameters {probably Huronian). (a) Sparry carbonate of lime, {b) Cellular carbonate of lime, (c) System of tubuli.{d) Serpentine replacing the coarser ordinary variety, {e) Serpentine and horn-blende replacing the finer variety, in the very much contorted portions. Huronian period. In rocks of this age in America,after long search and much slicing of limestones, Ihave hitherto failed to find any decided foramini-feral remains other than the Tudor and Madocspecimens, which may be of this age. They arelaminated forms resembling Eozoon, but I havereason to believe that their minute structure more 214 RELICS OF IRIMEVAL LIFE closely resembles that of Cryptozoon, though it issomewhat obscure. If these are really Huronianand not Laurentian, the Eozoon from this horizondoes not sensibly differ from that of the LowerLaurentia
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