10 



12 



13 



14 



15 



16 



17 



50 60 70 80 90 100 110 120 130 140 150 



-niiMiii linili i.itei'Hliiiiln ; i I i i iihii il n i iliiiilimi 



Fig. 5. Chloroxylon Swietenia. Longitudinal series. Scale as in Fig. 3. 

 Ann. Biol, vn 17 



