IV CONTENTS. 



Pose 

 XXXIX. SCIENTIFIC INTELLIGENCi:, - - UV,i 



I. NATURAL I'HlLOSOl'llV. 



ASTBONOMT.— .1. Comet of December 182G. 2. M. Westphal's Tabic of 



Variable Stars, .... 18;^— 1{J1 



Magnetism. — 3. LebaillifTs Needle for showing the smallest quantity of Mag- 

 netism. 4. Singular Magnetic Property of Bismutli and Antimony, 184 — 18o 



Meteorology. — 5. Hourly Meteorological Observations on the 17th July. 



6. Luminous Spots near the Horizon. - - 185 



II. CHEMISTRY. 



?• New compound of Selenium and Oxygen. 8. Theory of the Formation of 

 Mineral Waters. 9. Caustic Potash. 10. Composition of Nitric Acid. 11. 

 Nitrification. 12. Solidification of Bromine, and some new compounds of 

 that substance. By M. Serullas. 13. Hydrocarburet of Bromine. 14. 

 Ilydro-bromicEther. 15. Cyanuret of Bromine. 10. New Sources of Bro- 

 mine. 17* Supposed Chlorate of Manganese in the native Peroxide. 18. 

 Analysis of the Meteoric Stone which fell near Ferrara in 1824, 185 — lUl 



III. natural history. 



Mineralogy. — 19. Crystallized Pyrope. 20. Remarkable optical property 

 ofDichroite, - - - 191 



Geology. — 21. Dr Hibbert's System of Geology. 22. Mr Scrope's Memoir 

 on the Geology of Central F"rance. - - ib. 



Zoology. — 23. System of Ornithology, - - 192 



Botany. — 24. Natural History of the Auricula, - ib. 



IV. general science. 



25. Kumford Medals Adjudged. 26. Dr Brewster's System of Popular and 

 Practical Science. 27. Siamese Islands of Ko-si-Chang and Ko-Cramb, 193 — 194 



XL. List of Patents granted in Scotland since February 8, 1827, 195 



XLI. Celestial Phenomena, from July 1st to October 1st, 1827, - ih. 



XL II. Summary of Meteorological Observations made at Kendal in March, 

 April, and May 1827. By Mr Samuel Marshall, - 198 



XLIII. Register of the Barometer, Thermometer, and Rain-Gage, kept at 



Canaan Cottage. By Alex. Adie, Esq. F.R.S. Edinburgh, - 200 



NOTICES TO CORRESPONDENTS. 



A Correspondent who has sent us an account of some improvements on the Gal- 

 vanic Battery, has omitted to inclose tlie last part of his letter, so that we have only 

 a portion of his letter, without his name and address. We beg that he will have the 

 goodness to supply this defect. 



We cannot insert L.'s paper on the London University. We can assure him that 

 he is as much mistaken in his facts, as he appears to us to be in his arguments. It 

 has happened to come within our personal knowledge, that in the department to 

 which he speaks, the greatest care has been taken to select the most distinguished of 

 the candidates ; and we are confident that there will be arrayed midcr the banners 

 of that institution a phalanx of distinguished individuals, who will give a vigorous 

 impulse to the progress of science in England. 



Mr Christie's Communication readied us too late for insertion in this Number. 

 Mr Marshall's Hypothesis respecting the cause of the nortJi-east winds in 

 Spring, or any thing else which he may send us, will be thankfully received. 



