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SCIENTIFIC AMERICAN SUPPLEMENT, No. 279. 4453 gravelly, (hey �l;��ldbe employed. Then a roof should be and at an altitudes. Tbis bas been proved by sam pIes hav-l erected of boards, and made water-proof, and there should ing been drawn from valleys, from the summit of hi�·h be a door. The cellar should be dark, and then a load of mountains, from above the ccntrr of the Atlantic Ocean, all horse m:tnure should be packed against the entrance. Celery of which possessed identically the samedoi:10.1038/scientificamerican05071881-4453asupp fatcat:zs4l3llrcngkpog3zvipvz6tta