Vlll CONTENTS. 



PAGE 



IX. Scientific Intelligence 396 



1. Floorcloth Manufactory ib. 



2. Present State of Jerusalem 397 



3. Manufacture of Pens. By Dr. Faraday ib. 



Scientific Books in the Press and on Hand .... 399 

 Meteorological Journal for March. By the Rev. J. 



Wallace . 400 



No. VI.— Jane. 



I. Biographical Notice of M. Chaptal 401 



II. Chemical Analysis of Gadolinite, together with an Ex- 



amination of some of the Salts of Yttria and Cerium. 

 By Thomas Thomson, M. D., &c, and Andrew Steel, 

 M. D 403 



III. Examination of Lymph, Blood, and Chyle. By John 



Miiller, M. D., &c 424 



IV. Experiments and Observations on Visible Vibration. By 



Charles Tomlinson, Esq ,433 



V. On the Accidental Colours of certain solutions on Mer- 



cury. By Charles Tomlinson, Esq 439 



VI. On Malt. By Robert D. Thomson, M. D. 441 



VII. Analysis of Wolfram. By Mr. Thomas Richardson . . 449 



VIII. Erysipelas of the Extremities successfully treated by 

 Mechanical Pressure. By James Allan, Esq. . . . 452 



IX. On the mean Temperature of the Ground at Various 



Depths. By F. Rudberg 456 



X. Scientific Intelligence 458 



1. Ashmolean Society of Oxford . ib. 



2. Royal Institution 464 



3. Comparison of the two Theories of Electricity . . ib. 



4. Dr. Lardner on Halley's Comet 465 



5. Mr. Wheatstone on Speaking Machines 469 



6. Metropolis Soft Spring Water Company 470 



7. Address to Meteorologists 471 



8. Postscript to Mr. Walker's paper on the Adjustment of 



the Eye, &c ib. 



9. Optical Experiment 472 



10. Prevention of Dry Rot by Corrosive Sublimate . ib. 



11. Mode of Preserving Iron and Steel from Rusting . . 473 



12. Communication by Egypt to India 474 



13. Botanic Garden in Japan ib. 



14. Phloridzin, a New Substance 475 



15. Greatest Ascents in the Atmosphere ib. 



16. Diamonds in Africa . ,. ib. 



Meteorological Journal. By the Rev. J. Wallace 476 



Index 477 



