CONTENTS 



PAGE 



Of degeneration of cereals, and of the weeds which 



infest particular crops 193 



Of the conditions in the seeds of pulses known as- 



' cookable ' and ' uncookable,' and their causes . . 197 

 Of the grains and pulses which most exhaust the soil, or 



which improve it 199 



Of the diseases of cereals and pulses, and of hurtful 



winds 201 



Of seeds which keep or do not keep well 205 



Of the age at which seeds should be sown 209 



Of artificial means of preserving seed 211 



Of the effect of heat on seeds 211 



Of certain peculiarities of the seed of lupin and aigilops 213 



BOOK IX 



OF THE JUICES OF PLANTS, AND OF THE MEDICINAL 

 PROPERTIES OF HERBS 



Of the various kinds of plant-juices and the methods of 



collecting them 217 



Of resinous trees and the methods of collecting resin 



and pitch 223 



Of the making of pitch in Macedonia and in Syria . . . 229 



Of frankincense and myrrh : various accounts .... 233 



Of cinnamon and cassia : various accounts 243 



Of balsam of Mecca 245 



Of other aromatic plants all oriental, except the iris . 247 

 Of the medicinal juices of plants and the collection of 



them : general account 251 



Of the cutting of roots for medicinal purposes, and of 



certain superstitions connected therewith .... 255 



Of the medicinal uses of divers parts of plants .... 261 

 Of hellebores, the white and the black : their uses and 



distribution 265 



Of the various kinds of all-heal 269 



Of the various plants called stryTchnos 271 



Of the various kinds of tithymallos 275 



vii 



