XIV. DR DAVY'S Brief Sketch of the Geology of the West Indies. Communicated for the Philosophical Journal, 158 XV. On the Differences between Progressive, Embryonic, and Prophetic Types in the Succession of Organized Beings through the whole range of Geological times, 160 XVI. On a New Analogy in the Periods of Rotation of the Primary Planets discovered by DANIEL KIRKWOOD of Pottsville, Pennsylvania, 165 XVII. SCIENTIFIC INTELLIGENCE:-- METEOROLOGY. 1. Use of Coloured Glasses to assist the View in Fogs. 2. Ozone, 170-171 HYDROGRAPHY. 3. On the Phenomena of the Rise and Fall of the Waters of the Northern Lakes of America. 4. Water Thermometer. 5. On the Falls of Niagara. 6. On the Existence of Manganese in Water. 7. Arsenic in Chalybeate Springs, 172-175 GEOLOGY. 8. The Coal Formation of America. 9. River Terraces of the Connecticut Valley, 175-177 ZOOLOGY. 10. Fossil Crinoids of the United States. 11. Discovery of Coral Animals on the Coast of Massachusetts. 12. On the Circulation and Digestion of the Lower Animals. 13. Distribution of the Testaceous Mollusca of Jamaica. 14. Metamorphoses of the Lepidoptera. 15. On the Zoological Character of Young Mammalia. 16. The Manatus or Sea Cow, the Embryonic Type of the Pachydermata. 17. Fossil Elephant and Mastodon from Africa. 18. Cauterization in the case of Poisonous Bites. 19. Dental Parasites, 177-184 ARTS. 20. The Steamboat New World. 21. Use of Parachutes in Mines. 22. Adulterations of Drugs. 23. To restore Decayed Ivory. 24. Ivory as an Article of Manufacture. 25. Flexible Ivory. 26. Air-Whistle. 27. Curious Electrical Phenomenon, 184-188 XVIII. List of Patents granted for Scotland from 22d March to 22d June 1850, 189 * * * * * _Memorandum._--New Publications will be noticed in our next Number. MEMORANDUM. Owing to the large space occupied by the Proceedings of the British Association for the Promotion of Science, held at Edinburgh in the month of August, 1850, various interesting communications are delayed until the next number of the Philosophical Journal. THE