409 



1\ degrees — 



E. prcecoriacea. 



30-35 degrees- 

 is'. Hayi. 

 E. Delftii. 



30-40 degrees — ■ 

 E. Hayi. 

 E. Pluti. 



35 degrees— 



E. Kitsoni. 



35-45 degrees — 



E. Hermanni. 



35-50 degrees — 



E. Chapmani. 



40-45 degrees— 

 E. Pluti. 



40-50 degrees — 



E. Hermanni. 

 E. Kitsoni. 



LONGITUDINALES. 



OBLIQUE. 



40-55 degrees — 



E. Pluti. 



E. Suttoni. 

 45 degrees — 



E. Davidsoni. 

 45-50 degrees — 



E. Oxleyana. 

 50-55 degrees — 



E. Howitti. 

 50-60 degrees — 



E. Houtmanni. 



E. Mitchelli. 

 50-65 degrees — 



E. Mitchelli. 

 50-70 degrees — 



E. cretacea. 

 55-65 degrees — 



E. Diemenii. 



60-70 degrees — 



E. Milligani. 



TRANSVERSA. 



Variation in different parts of the same leaf. 



I have already pointed out (p. 394) that the angles the secondary veins make 

 with the midrib vary according to the leaf, or the width of the leaf, and, therefore, in 

 order to secure as much uniformity as possible, I divided the leaves into three equal 

 portions, measuring the angles in the middle third. That the angles vary somewhat 

 according to the part of the leaf, can be seen from so many of the leaves figured in the 

 various Plates. Mr. Anderson has taken the following measurements from three species 

 which vary a good deal amongst themselves : — 



E. globulus (seven leaves examined). 





No. 1. 



No. 2. 



No. 3. 



No. 4. 



No. 5. 



No. 6. 



No. 7. 



Lowest Third 



... 15-30° 



30-35° 



35-45° 



10-15° 



25-30° 



35-55° 



30-40° 



Middle 



... 40-45° 



30-40° 



35-45° 



35-45° 



30-40° 



40-50° 



30-40° 



Top „ ... 



... 45-60° 



40-45° 



35-50° 



30-45° 



40-50° 



45-55° 



30-45° 



