60 OF WOOD IN GENERAL. 



rays fine : zone of vessels interrupted : summer 

 wood reddish nut-brown. Hickories, Hicoria. 

 ft Similar, but with blackish heartwood. Persimmon, 



Diospyros nrginuma. 



Iff Vessels distinct and large, sometimes filled with 

 white phosphate of lime : pith-rays fine, dis- 

 tinct, light-coloured : wood brownish-red. Teak, 

 Teddna. 



ff ft Vessels equally distributed: pith-rays fine, dis- 

 tinct: wood a warm red brown, often beautifully 

 figured. Mahogany, Swietenia Mahdgoni. 

 ttttf Vessels very large, open or partly filled with a 

 brown resin : pith-rays distinct : heart-wood cin- 

 namon-brown, very soft, fragrant. Honduras 

 Cedar, Cedrela odordta. 



b. Vessels in the spring wood not larger, but generally 

 more numerous and crowded than in the autumn 

 wood, 

 (i) Pith-rays distinct. 



* Heartwood reddish-brown, zone of vessels in spring 

 wood lighter coloured : vessels 1 4 together: hard, 

 heavy. Plum, Primus domestica. 



** Heartwood yellowish-brown, with greenish streaks, 

 fragrant: vessels I 8 together: hard. Mahaleb 

 Cherry, Prunus Mdhaleb. 



*** Heartwood yellowish-brown, with an unpleasant 

 odour at first : sapwood yellowish-white : vessels 

 1 8 together : moderately hard. Bird Cherry, 

 Prunus Pddus. 



**** Heartwood blackish-brown, with pith-flecks : sap- 

 wood reddish : vessels 1 5 together : hard. Black- 

 thorn, Prunus spindsa. 



***** Heartwood yellowish-brown : sapwood reddish- 

 white: vessels minute, 1 13 together: hard, heavy. 

 Cherry, Prunus Cdrasus. 

 ****** Sapwood yellowish-white : heartwood slightly 



