PRESIDENTIAL ADDRESS — SECTION C. 7 1 



are preferred by stock? Can they be cultivated artificially, and 

 i'f so, how should they be treated? 



2. Poisonous Plants. — Their distribution, comi)osition, anti- 

 dotes and method of eradication. 



These plants are being investigated by the Veterinary Re- 

 search Division of the Department of Agriculture, in collabora- 

 tion with the Division of Plant Pathology and Botany. 



3. A^oxioits ll'ccds. — Their occurrence, mode of distribu- 

 tion, eradication, and preventive measures to be taken against 

 them. These are receiving attention at the hands of the De- 

 partment of Agriculture at Pretoria. 



4. Medicinal Plants. — Their distril)ution, relative abundance, 

 properties, chemical composition, commercial value, and method 

 of propagation. These have already received some attention 

 from the late Rev. Andrew Smith, from Dr. Marloth, Dr. Juritz. 

 Dr. Rindl and the late Prof. Pears(^n. and successful efforts are 

 being made to propagate some of them at the National Botanic 

 Garden, Kirstenlx^sch. 



5. Insecticides. 



6. Cereals, vegetables, fruits and other plant products suit- 

 able for human food. 



7. Oil seeds (yielding fixed oils). 



8. Essential oils and perfumes. 



9. Gums, resins, waxes and rubbers. 



10. Saponaceous plants. 



11. Fibre plants. 



12. Tan plants. 



13. Dye plants. 



14. Timber trees. 



15. Basket and other wicker-work materials. 



16. Plants of use as fertilizers ( i.e., suitable for green- 

 manuring — ^nitrogen gatherers— or as sources of potash, lime, 

 etc.). 



17. Ornamental ])lants suital)le for cultivation in gardens, 

 or for export as dried flowers. 



In all of these cases we need io know, in addition to the 

 name of the plant and its relationships, its — 



(a) Distribution. 



(&) Relative abundance. 



(c) Local uses and local names. 



(d) Properties or com]>nsition 

 {e) Commercial valtie. 



(/) Methods of propagation and cultivation. 



Ig) Habitat. 



(h) Any other facts about it likely to be of interest. 



Farm, Garden, Orchard and Forest Crops. 



x^n important part of the sur\e\' is the mapping of the 

 country in relation to the crops already grown therein, and the 

 possibility or desirability of extending those areas- 

 Supplementary to this, there should be prepared lists showing 



