CONTENTS. 



4. Bone Caves in New Holland, - • - - - 380 



5. Volcano in New Zealand, - - - - 381 



6. 7, 8. Interesting discovery of Fossil Animals — Recent for- 



mation of Zeolite — Crystals in Living Vegetables, 382 



CHEMISTRY. 



1. On the development of Azotic gas in Warm Springs, 383 



2, 3, 4. Salicine — Crystalline compounds in Sulphuric Acid — 



A remarkable Chalybeate Water, - - 384 



5. Platina Lamp, - - - - - 385 



6. A new metal discovered, - - - - 386 



MEDICAL CHEMISTRY. 



1. Efficacy of Iodine, - - - - - 386 



STATISTICS. 



1. Universities of Prussia and Germany, - - - 388 



2, 3. The city of Berlin — St. Petersburgh Academy of Sciences, 389 

 4. Antique Medals found near Geneva, - - - 391 



MECHANICAL PHILOSOPHY. 



1. Bored Wells, - - - - - - 392 



2. On tempering metallic wires and springs, - - 393 



3. Manufactured articles from Horns and Hoofs, - - 394 



4. Thunder Storms in France, . . _ . 395 



5. 6. Aurora Borealis at Paris — Lightning Tubes, - - 396 



OTHER NOTICES. 



1. Exchanges of organized remains, . - . 397 



2. Heidelberg collection of minerals, petrifactions, and models 



of crystals, - - - - - 398 



3. Gum Ammoniacum, ----- 399 



DOMESTIC. 



1. American Marine Conchology, - - • - 400 



2. Projected Branch Mint of North Carolina, - - 401 



3. Electrical properties of Caoutchouc, - - - 404 



4. Geological remarks relating to Mexico, - - 406 



5. Aluminium and magnesium, _ - . - 408 

 6,7. Pure chromate of potash — Covering for wires, - 409 

 8, 9, 10, 11. Memoir on vision — Problem — Topaz in the 



White Mountains of New Hampshire — Marl for manure, 410 



12. Iodine in Angina Pectoris, - - - - 411 



13, 14, 15. New Monthly Journal — Magazine of Useful and 



Entertaining Knowledge — Journal of the Franklin In- 

 stitute, -....= 412 

 16, 17. Mr. Cooper''s Disclaimer-— Education, - - 413 



