GROWTH OF WOOD IN DECIDUOUS AND EVERGREEN TREES. 



51 



was nearly twice as great as in 1880, amounting to 21 per cent, of the annual 

 increase. Again no doubt it was mainly due to the Hungary oaks, their pro- 

 portionate growth for May having been 24 per cent, of their annual increase ; 

 still the beeches were not idle, their corresponding growth amounting to 10 

 per cent. And although the Hungary oak — exceptional among deciduous 



Table III. 



-Monthly Increase in Girth, in hundredths of an inch, of Five Deciduous 

 and Six Evergreen Trees in the Botanic Garden. 





1880. 



1881. 



1882. 





May 



May. June, and 



June. 



July. 



Aug. 



Sept. 



May 



and 



June. 



July. 



Aug. 



Sept. 



May 

 May. June and 

 June. 



July. 



Aug. 

 and 

 Sept. 



Deciduous Trees — 























Beech, . 



•00 + -25 = -25 



•50 



•10 



•00 



•20 



•25 



•35 



05 



•10 + -35 = -45 



•40 



•30 



» 



•10 + -30 = -40 



•20 



•35 



•05 



•35 



•35 



•15 



•05 



15 + -30 = -45 



•30 



•35 



Hungary oak, 



•30 + -40 = -70 



•40 



•30 



•00 



•60 



•50 



•65 



•05 



•30 + -45 = -75 



•60 



•50 





•05 + -40 = -45 



•30 



•30 



•05 



■65 



•45 



•50 



•00 



•35 + -50 = -85 



•55 



•50 



» » 

 Total, . 



•20 + -30 = -50 



•30 



•25 



•05 



•60 



•55 



•50 



•00 



•65 + -15 = -80 



•50 



•20 



0-65 + l-65 = 2-30 



1-70 



1-30 



015 



2-40 



2-10 



2-15 



015 



1-55 + 1-753= -30 



2-35 



1-85 



Average per ) 

 tree, . . J 



0-13 + 033 =0-46 



0-34 



0-26 



0-03 



0-48 



0-42 



0-43 



0-03 



0-31 + 0-35=0-66 



0-47 



0-37 



Monthly per- \ 

 centage, . J 



12+ 30= 42 



31 



24 



3 



35 

 •40 



31 



32 



2 

 •00 



21+ 23= 44 



31 



•10 



25 

 •05 



Evergreen Trees — 

 Sequoia, 



•40+ -25= -65 



•40 



■05 



•00 



•00 



•15 



•25+ -30= -55 





•55+ -50 = 1-05 



•70 



•15 



•00 



1-00 



•05 



•45 



•00 



•45+ -65 = 1-10 



•20 



•10 



>> 



•70+ -40=1-10 



■30 



•00 



•00 



•85 



•25 



•20 



•00 



•75+ -65 = 1-40 



•25 



•10 



» • 



•55+ -40= -95 



•45 



•00 



•00 



•75 



•30 



•30 



•00 



•55+ -55 = 1-10 



•40 



•15 



Araucaria, 



•40+ -15= -55 



•15 



•05 



•00 



•35 



•10 



•15 



■00 



•45+ -10= -55 



•15 



•15 



Atlas cedar, . 

 Total, . 



•45+ -30= -75 



•40 



. -50 



•05 



•55 



•35 



•50 



•00 



•35+ -40= -75 



•40 



•45 



3-05 + 2-00=5-05 



2-40 



0-75 



0-05 



3-90 



1-05 



1-75 



o-oo 



2-80 + 2"'65 = 5-45 



1-50 



1-00 



Average per \ 

 tree, . . j 



0-51 + 033 = 0-64 



0-40 



0-12 



0-01 



0-48 



017 



0-29 



o-oo 



0-46 + 0-44=0-90 



0-25 



0-17 



Monthly per- \ 

 centage, . j 



37+ 24= 61 



30 



9 







51 



18 



31 







35+ 33= 68 



19 



13 



trees for its 



early vigour — v 



mdn 



y ra 



ises 



the 



aver, 



xge 



in sc 



> small a numb 



er oj 



f 



trees in general. For if we include the whole of them, twenty-five in number, 

 other than Hungary oaks, which were measured for the purposes of this inquiry 

 for the first time in this same year, their average growth in May proves to be 12 

 per cent, of the annual increase. Including the three Hungary oaks the pro- 

 portion amounted to 16 per cent. 





