IV CONTENTS. 



Page. 

 XXII. Description of a frame Bridge ; by Geo. W. Long, 



Lieut. U. S. Art. 123 



XXIII. Mioeralogical Journey by C. U. Shepard, Assis. to the 



Prof, of Chem. and Min., and Lect. on Bot. in 

 Yale Col. 126 



XXIV. Notice of the American Antiquarian Society, from a 



letter of Dr. Jacob Porter, _ _ - - 136 

 XXV. Notice of the Osseous remains at Big Bone Lick, 



Kentucky, - - - - - - - 139 



XXVI. Bromine in American Saline Waters. A. A. Hayes, 



and the Editor, - - - - - -142 



SCIENTIFIC INTELLIGENCE.* 



CHEMISTRY. 



1, 2, 3. Cement for hard stones, porcelain and glass — Preserva- 

 tion of butter — Artificial preparation of ice, - 145 



4, 5. Action of iron on ammonia — Effect of muriatic and sul- 

 phuric acid on hydro-cyanic acid, _ _ - 146 



6, 7, 8. Phosphorus in vacuo — Combustibility of carbon increas- 

 ed by platina and copper — Decomposition of sulphates 

 in water by organic matters, . - - _ 147 



9, 10, 11. Instantaneous light apparatus — Sympathetic ink — On 



a peculiar principle in blood, distinctive of its source, 148 

 12, 13. On the formation of acids in vegetables — Proportions of 



oil in different oleaginous plants, - - - 150 



14, 15. Coloring matter of Lichen Rocella — Researches respect- 

 ing platina, _______ 151 



16. Process for preserving milk, for any length of time, - 152 



17, 18. Decomposition of carburet of sulphur, by weak electric 



action — Combinations of bromine, - - - 153 



19,20. Preparation of bromine — Preparation of ioduret of azote, 154 

 21, 22. Chloride of nitrogen — Fulminating silver, - - 155 

 23. Percussion powder, - - - - - - - 156 



MEDICAL CHEMISTRY. 



1. Decomposition of sulphates in waters, by organic substances, 156 



2, 3. Poisonous confectionary — Memoir on hydro-cyanic acid, 1 57 



4. Efficacy of chlorides, - - - - - - 159 



5. Deleterious effects of sulphuretted hydrogen, - - 160 



6. 7, 8. Cleansing of sewers — Chlorine — Hydriodic ether, 161 

 9. Analysis of bile, - 162 



NATURAL HISTORY. 



1. Analysis of the Russian platina, - - - - - 162 



2, 3. On the silicate of iron, of Badenmais — On a new mineral, 



hydro-carbon, - - - - - - - 164 



4. Means employed by the spider in weaving its web, - 165 



5. Phosphorescence of sea water, - - - - - 166 



* The arranged articles communicated by Prof. J. Griscom. 



