CONTENTS. iii 



Art. XX. On the Transparency of Space. By Df- *0^'6*^s of 



Bremen, - - - - 141 



XXI. Observations on the Spontaneous Motions of the Ova 

 of the Campanularia dichotomaj Gorgonia verru- 

 cosa, Caryophylleae calycularis, Spongia panicea, 

 Sp. papillaris, cristata, tomentosa, and Plumularia 

 falcata. By Robert E. Grant, M. D. F. R. S. E. 

 F.L.S. M.W.S. Communicated by the Author, 150 

 XXII. Remarks on the Noises that sometimes accompany 



the Aurora Borealis, _ - _ 156' 



XXIII. On the presence of Iodine in the Mineral Spring of 



Bonnington, near Leith. By Edward Turner, 

 M.D. F.R.S.E. &c. In a Letter to Prof Jameson, 159 



XXIV. Intelligence from the Arctic Land Expedition under 



Captain Franklin and Dr Richardson, - I6I 

 XXV. Remarks on the Structure of some Calcareous Sponges. 

 By Robert E. Grant, M.D. F.R.S.E. F.L.S, 

 M.W.S. &c. Communicated by the Author, 16"() 



XXVI. List of Rare Plants which have Flowered in the Royal 

 Botanic Garden, Edinburgh, during the last three 

 months ; with Descriptions of several New Plants. 

 Communicated by Professor Graham, - 171 



XXVIl. Celestial Phenomena from July 1. to October 1. 1826, 

 calculated for the Meridian of Edinburgh, Mean 

 Time. By Mr George Innes, Aberdeen, 176 



XXVIII. Proceedings of the Royal Society of Edinburgh, 178 

 XXIX. Proceedings of the Wernerian Nat. History Society, 178 



XXX. Scientific Intelligence. 



NATURAL PHILC«OPHY. 



1. Lieut. Drummond on the means of facilitating the Obser- 



vations of Distant Stations on Geodesical Observations, 182 



METEOROLOGY. 



2. Deception occasioned by Fog. 3. Apparent nearness of 



Objects. 4. Mirage in Persia. 5. Shower of Fishes in ♦ 

 Argyleshire. 6. Shbwer of Herrings in Galloway. 7. 

 Shower of Herrings in Kinross-shire. 8. Shower of 

 Shells in Ireland. 9- Colours of Lightning. 10. Meteoric 

 Stones, - - - - - 183-188 



CHEMISTRY. 



11. Effects of Mineral Substances on Animals. 12. Salts as- 

 sume different primitive forms, according to the men- 



