The American Journal of Science and Arts, Volume 67, Part 1

acid angle animal Aphides appears Arago atmosphere auroral auroral light azoic Barytocalcite beds Berzelius bodies carbonate cavities cells Chabazite character chlorine cleavage color contain crystalline crystals cylinder deposits diameter distinct dorsal engine Esox Euclase examined fact feet feldspar fibrilla formation formula fossils genus geological germs glass globules hail heat Heulandite Homœomorphism hornblende Idocrase inches iron Joule Koh-i-noor Lake Superior layers less light lime limestone lines lower magnetic mass means microscope miles mineral minute nearly object observed occur organic oxyd oxygen particles phenomena plane plants Pomotis portion potash present pressure prism Prof quartz ratio regarded remarkable river rocks sandstone Scapolite seen silica Silurian slates species specimens stones storm strata structure substance sulphate surface Susannite temperature thickness tion tissue Tourmaline traced trappean Trenton true tube upper viviparous Wollastonite York