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tions of natural vegetation to cultivated plants. If in addition to 
recording temperature, rainfall, sunshine, and other meteorological 
elements, we could keep a parallel record of the stages of development 
of cultivated and uncultivated plants we could use the latter as an 
index to the effect of the weather during any season and predict from 
that the behavior of the cultivated plants. 
Temperatures at the respective phenological epochs for plants in European 
climates (by Gasparin). 
(1) LEAFING. 
aK On 
Wild honeysuckle’ (Lonicera peryclimenum) = = = ee eee 2.9 
MhHOLN Ys SOOSEDELIY CEUOCS) MUG) CHUSD ;) ae ee ee Eid) 
TFA Ci Ae oe St ee ee eee ae Ee ee ed ee 5.0 
ORCA TS Vox CUT AMD tH (LOE StU TiC) ee ee a ‘hosiery 6.9 
Rroad-leated nwallows (SQ sCapnce a) = a ee een) 
Elorse-chesinut (Ca7SCulus hip pOCaStani)) == se ee (eas 
Apple tree (J/alus communis) ; cherry tree (Cerasus communis) ~~~ 8. 0 
ie tree iGhiCusS*CAViCi) 5 Se ses ae ee ee ee ee ee 8.0 
Grapevine,|Sho0ots:=22= 22543 es a eee ee ee ee eee 9.5 
Mulberry tree covered with leaf-buds; walnut tree_______________________ 9.8 
Sprouting Of lucerne: crassee= 2 ae eee 2 eee eee 10. 
Aden tree: £2 SS 4. 8 2 ee ee ee ee ee 12.0 
Oak mulberry: tree developing deavess == a eee iPS 7 
Acaciar CRODINIG DSCUCOUCOCIO)) 2s ee ee eee Soe 
(2) FLOWERING. 
Hazelnutetrees(ConylUuseavellandies Cy CSS = ae ees ee eee ay) 
Furze or gorse (Ulex europe@us) ; box (Burcus sempervirens) ; white pop- 
LArNCRODULUS: QlOG LSS La ae re ee eee ee ee 4.0 
Rroad-leated wallow; honeysuckles= 22 oaks ee ee ee 5. O 
JY SY2W) BEAM 2 tak eee tere ent Cs el eee a 5. 4 
Aimond: tree's apricot reeL22== a= See. ee ee ee ee 6. 0 
Pear trees 22 bt) 8 ee as Be ee 9 es 2 Bo 18 a a ee 2 1 
Sim ,apple tree S26) ees Ske a ee eo 2 ee ee eee a 
@herry ‘tree: -eolza: 2208 9e he Pe 8. 0 
Milac: strawberry lant = see Se ee) ee ee ees eee 9.5 
Broom (Genista, SCODGTIC) = 2 5 ofa Ea ae a eae ee eee 10. 0 
IB@anGl 22s 2 = Le A are ee el PA eee 2 eee ee eee ee 2D beta) 
Prorse-chestmut22 222 2 fa ats 2 tS Be a eee 12.0 
Hawthorn orimaya (Mespilusionycantng) 222 ee 12.5 
Sainfoin or French grass (Hedysarum onobrychis, Leguminosee) ~~~ __=—- a PAE fi 
Keacias (RObONIG) = 2522s 2 eek Bee ee ee ee 14.0 
RV@n 22 22. 4 ses > eke er ee ee ee -e ee 14, 2 
Buckthorn (CRRAGMNNUS DANUTWS)) 2 ee ee ee eee 15. 0 
Oates. ale uh eRe ee ee 16. 0 
Wheat: barley. ian.) 2). Gee. Sol eee ae ee Ce 16.3 
Chestnut tree: 
Mirst lower... 25.2 Sn ee ee eee 16.6 
Bull flower'> = 2 2 282 Shanes Be oo pein! See a Eee Eee eed ee en eee 1. 5 
Grapevine: 
Bull Mower sco 4 2 52 0s 2b dors sess ON Eee ee ere ee 18. 2 
Hlowerppassed.. 22-82 2 = eee oe oF Wr ae ee ee 19. 0 
Indian corn; hemp; olive tree____________- we ase 8 A A 19. 0 
