NOTICES OP BOOKS. 89 



pages, and is divided into two Books ; the first devoted to specialities, the 

 second to generalities. Under the first are — 1. Meteorological observa- 

 tions ; 2. Observations on the growth of plants, followed by the results 

 of these, and a table of curves, founded upon the previously-detailed 

 observations on growth and the weather. Under the second Book are 



3. Considerations regarding growth; 4. Considerations regarding 

 climate (weather); 5. Climatic conditions of plants; 6., Concluding 

 remarks ; 7. Appendix. 



The meteorological observations extend over the year 1854, and 

 were taken at Giessen ; they include the daily maximum, minimum, 

 and mean temperature of the air in the shade; the solar radiation; 

 the temperature of the earth at one Paris foot depth, at nine a.m. and 

 four p.m.; the temperature of a spring; sunshine every quarter of an 

 hour ; rainfall, in Paris inches ; duration of rain, in quarters of hours 

 daily; mean daily humidity; mean height of the barometer daily; 

 moon's phases ; hoar-frost ; snow ; fog ; storms ; direction of the 

 winds ; fog from marshes. 



The observations upon growth are made upon the following 

 plants : 



1. Amygdalus Persica. (Leaves and twigs.) 



2. Galanthus nivalis. (Flowering and leafing.) 



3. Hordeum vulgar e. (Appearance of stem-leaves and axes of plants 



sown at different periods, etc. etc.) 



4. Prunus Avium. (Buds.) 



5. Prunus domestica. (Buds.) 



6. Pyrus Mains. (Buds.) 



7. Quercus pedunculata. (Buds.) 



8. Ribes Grossularia. (Sprouting of leaves, with twigs.) 



9. Secale cereale. (Stem-leaves and stem.) 



10. Solatium tuberosum. (Different varieties; leafing, and formation 



of stem-leaves, with twigs, etc. etc.) 



11. Syringa vulgaris. (Leaves and flowering, etc. etc.) 



12. TriticuM vulgare. (Leaves and stem.) 



13. Vitis vinifera. (Sprouting of the plant, leaves, flower-branches, 



etc. etc.) 

 Then follow tables containing exact measurements of the growth of 

 the various parts of the above-mentioned plants, occupying upwards of 

 100 pages, disposed in columns. 



VOL. IX. N 



