CONTENTS. 



XXVIII. On the Reproduction of the Toad and Frog without 

 the intermediate stage of Tadpole. By Edward 

 Joseph Lowe, Esq., . . . 184 



XXIX. Scientific Intelligence : — 



ASTRONOMY. 



I. Relation between the Spots on the Sun and Mag- 

 netic Needle. 2. On the Periodic Return of the 

 Solar Spots. 3. Lunar Atmospheric Tide, 186 



METEOROLOGY. 



4. Evaporation and Condensation. 5. The Amount 



of Oxygen in the World, . '187 



MINERALOGY. 



6. Wohler on the Passive State of Meteoric Iron. 

 7. Crystallisation of Glass. 8. On Diopside and 

 Molybdate of Lead, Furnace Products. 9. For- 

 mation of Arragonite, Calc-spar, Brochantite, 

 and Malachite. 10. On the Artificial Formation 

 of Malachite, . . . 188, 189 



BOTANY. 



II, The Effect of very Low Temperature on Vege- 

 tation. 12. Sleep of Plants in the Arctic 

 Regions, . . . 191 



ZOOLOGY. 



13. Professor Agassiz on the Colour of Animals, 



14. The Tsetse, or Zimb, of South Africa, . 192 



Erratum. 



For the formula on p. 379, line 11, vol. liv., substitute the fol 

 lowing : — 



50 



