LIST OF ILLUSTRATIONS 



PLATE To face page 



I. Fruits and Seeds of Rubber Plants . . . 17 



II. Tapping wild Hevea 20 



III. Forest scene, showing preparation of Hard Para 



rubber 22 



IV. Anatomy of Hevea 46 



V. Hevea Rubber on Swampy Land .... 95 



VI. Hevea Rubber and Tea 114 



VII. Hevea Tree pricked with Serrated Knife . . 133 



VIII. Vacuum Drying Machine 163 



IX. Canker of Hevea bark 188 



X. Nodules in Hevea bark 193 



FIG. PAGE 



i. Hevea brasiliensis 18 



i. Manihot Glaziovii 24 



3. Castilloa elastica 27 



4. Funtumia elastica 31 



5. Landolphia Kirkii 32 



6. Ficus elastica ........ 34 



7. Transverse section of Hevea bark ... 46 

 8, 9, 10, n. Anatomy of Hevea .... Plate IV 



12. Tapping areas 58 



13. Lining at right angles to a given base . . 106 



14. Square and hexagonal systems of planting . . 109 



15. Tapping system full herring-bone . . . 138 



16- half . . . 



17- i) half spiral .... 



18. full , 



19- Basal V 



20. Method of marking a tree for tapping . . 141 



21. Tapping tools gouge and farrier's knife . . 144 



22. Hand Washing Machine 161 



