. Scientific American Volume 10 Number 25 (June 1864). mbers. They form a large por-tion of the chalk formation which was laid down inthe age of reptiles, and at that time the shells weregenerally of about the size of a pins head; in lowerstrata the shells are found as large as a penny, andin still lower a foot in diameter. By a communication on another page from thegeologist, Dr. Stevens, it will be seen that the Cana-dian geologists have found the remains of rhizopodsin unstratified granite, a rock heretofore supposed tobe destitute of organic remains. These rhizopodshells in granite are thr
. Scientific American Volume 10 Number 25 (June 1864). mbers. They form a large por-tion of the chalk formation which was laid down inthe age of reptiles, and at that time the shells weregenerally of about the size of a pins head; in lowerstrata the shells are found as large as a penny, andin still lower a foot in diameter. By a communication on another page from thegeologist, Dr. Stevens, it will be seen that the Cana-dian geologists have found the remains of rhizopodsin unstratified granite, a rock heretofore supposed tobe destitute of organic remains. These rhizopodshells in granite are three feet in diameter. Thus itis proved that the seas were swarming with life inthat remote time when the oldest formation washardened into rock. And at that time the rhizopodshad reached their maximum development. Unlessthis family forms an exception to tae general law ofanimal life, it must have been growing through un-measured ages before the time when the hardeninggranite first enfolded the gigantic remains in theireverlasting tomb. TO OUR ISSUED FROM THE UNITED STATES PATENT-OFFICE FOR THE WEEK ENDING JUNE 7, Officially for the Scientific American. fi®* Pamphlets containing the Patent Laws and fullparticulars of the mode of applying for Letters Patent,specifying size of model required and much other in-formation useful to inventors, may be had gratis by ad-dressing MUNN & CO., Publishers of the ScientificAmerican, New York. Patent Claims.—Persons desiring the claim of any in-vention which has been patented within thirty years, can obtain acopy by addressing a note to this office, stating the name of the patenteeanddateof patent, when known, and enclosing $1 as fee forcopying. We can also furnish a sketch of any patented machineissued since 1853, to accompany the claim, on receipt of $2. AddressMUNN & CO., Patent Solicitors, No. 37 Park Row, New York. Invariable Rule.—It is an established rule of this office to stopsendingthe paper when the time f
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