. The Open court. in large quantities byvolcanoes together with HCl), to form salts, for instance XaOH-|-HCl^XaCl+H,0: KOH-f HCl=KCl+HjO ; (NaOH)=-f H=SO,=Na=S04+2HjO:CaOH=+H=+2H=0: Mg(OH)H-2HCl=MgCU-f2H=0: Mg(OH).+|-2H=0. rill i:\i»().\ ()|- (MMA T 647 long survived a rugged existence on tlie desert, storm-beaten rocksof the Cambrian land surface. Among the humble forms of life found in the Cambrian Seawere the foraminifera. sponges, graptolites, corals, ostracods. phyllocarida, Avorms. pelecypoda. and gas-tropoda. most of which were sh
. The Open court. in large quantities byvolcanoes together with HCl), to form salts, for instance XaOH-|-HCl^XaCl+H,0: KOH-f HCl=KCl+HjO ; (NaOH)=-f H=SO,=Na=S04+2HjO:CaOH=+H=+2H=0: Mg(OH)H-2HCl=MgCU-f2H=0: Mg(OH).+|-2H=0. rill i:\i»().\ ()|- (MMA T 647 long survived a rugged existence on tlie desert, storm-beaten rocksof the Cambrian land surface. Among the humble forms of life found in the Cambrian Seawere the foraminifera. sponges, graptolites, corals, ostracods. phyllocarida, Avorms. pelecypoda. and gas-tropoda. most of which were shell bearing, and all invertebrates andwithout red blood. The world was not then a fit abode for thehigher forms, and Deity placed the lowly invertebrates in the seawhile preparing the land for higher and better types of his creation. During the succeeding period, the Lower Silurian, the first,armored fishes appeared, some of which found a cemetery nearCanon Citv, Colorado. The earlv armored fishes show a crradual. Fig. II. THE SILLRIAX CONTIXENT OF NORTH AMERICA^ as it appeared at the close of the .Silurian period in the midst ofthe Paleozoic era. Invertebrates had lived in the ancient seaprincipally prior to the Upper Silurian period, but the vertebratesappeared during the period named above in the form of fishes.(After a drawing by Alexander Winchell.) transition from the eariier shelled animals to the later vertebrates,being entirely without endo-skeletons. i. e., the armors served asskeletons. The succeeding period, the Upper Silurian, produced armoredfishes in vast numbers, which w^ere contemporaneous with the ammo-noidse, shelled animals, similar to the nautilus; the ammonidas wereprolific during the Devonian period, when fishes much like those of 648 I HE fiPHX COURT. to-day, and great toothed sharks became the nionarchs of the world,showing a gradual upward trend in animal creation. The land area had grown during the Cambrian and Silurianperiods, (Fig. II), the belt ar
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Keywords: ., bookcentury1800, bookdecade188, booksubjectreligion, bookyear1887
