yi CONTENTS. 



l'AGE 



10. New Minerals 389 



Horary Observations of the Barometer, &c. for 21st March 399 

 Meteorological Journal, By the Rev. John Wallace . . 400 



No. XVIII.— June. 



I. Memoir of Dr. Thomas Young. By M. Arago, concluded 401 



II. Method of determining the value of the Black Oxide of 



Manganese for manufacturing purposes. By Thomas 

 Thomson, M.D., F.R.S., &c .412 



III. Description and Analysis of Emmonite, a New Species of 



Carbonated Strontian from America. By Thomas 

 Thomson, M.D., F.R.S., &c 415 



IV. Analysis of the Water of Nutshill Spring. By Thomas 



Thomson, M.D., F.R.S., &c. . . . . . • . .418 



V. On the Connexion between Refracted and Diffracted Light. 



By Paul Cooper, Esq., concluded 419 



VI. On Donium, a New Substance discovered in Davidsonite. 



By Mr. Thomas Richardson 426 



VII. On a Difficulty in Isomorphism, and in the received Con- 



stitution of Oxygen Salts ; in a Letter to Professor 

 Mitscherlich of Berlin. From Thomas Clark, M. D., 

 Professor of Chemistry, in Marischal College, Aberdeen 433 



VIII. The Art of Dyeing, continued . . . _ 444 



IX. Notice of some Recent Improvements in Science . . . 456 



X. Analyses of Books 463 



1. On the Application of the Hot Blast in the manufacture 



of Cast Iron. By Thomas Clark, M. D., &c. . . .463 



2. Travels in the United States of America, Canada, &c. 



by J. Finch, Esq 466 



XI. Scientific Intelligence, &c 468 



1 . Plumbago and Black Lead Pencils ib. 



2. Breakwater at Madras 469 



3. Meteors seen periodically on the 12th and 13th Nov. 470 



4. The existence of a New Planet suspected ib. 



5. Hypothesis respecting the greater Quantity of Rain 

 which falls at the Surface of the Earth, than at consi- 

 derable Elevations ib. 



6. Constant Voltaic Battery 472 



7. Pharmacy, &c 473 



8. Observations of the Planet Jupiter 474 



9. Solar Eclipse on the 15th May 475 



10. Footmarks of unknown Animals and Birds discovered in 

 New Red Sandstone ib. 



1 1 . New Minerals 476 



12. Anagyris Foetid^ 477 



13. Action of Gypsum on Vegetables ib. 



1 4. Analysis of Morbid Bile ib. 



15. Phloridzin 478 



16. Examination of the Dung Beetle . . " 479 



17- Examination of the Tape Worm . ib. 



18. Concretion from the Nose . . . ib. 



19. Diseased Woman's Milk ib. 



20. Analysis of White Blood ib. 



Meteorological Journal. By the Rev. John Wallace . . 480 



