18S4.] THE INTERNATIONAL FOnESTBY EXHIBITIOX. 200 



believed that with tlu^ sugar-cane, as with all other i)lants, tln^ con- 

 tinuous cultivation of the same kinds on the same lands must result 

 in reducing their health and vigour, and, consequently, the (quantity 

 and value of the produce. Where estates have no nurseries, and tops 

 for planting are taken from weak and practically abandoned cones, 

 the general character of the cultivation must be gradually lowered, 

 even in the best soils. No plan can be recommended so likely to 

 overcome this as the introduction, from time to time, of new kinds of 

 sugar-canes which are the result of careful selection and cultivation in 

 more favoured countries. 



INTERNATIONAL FORESTRY EXHIBITION. 



will doubtless be interesting to many of our readers if we re-print the 

 following ' Classification ' circular, issued by the Committee, from which 

 they will be able to form a good idea of the comprehensive scope of the 

 Exhibition: — 



CLASS I.— PEACTICAL FORESTRY. 



1. Implements antl Tools used in Forestry, Draining, Enclosing, and Survey- 

 ing Instruments, Chains, Dendrometers, &c. 



•2. Models of Foresters' Huts, Drying Sheds, Charcoal Kilns, Timber Slips, 

 Shiices, Bridges, and Weirs. 



3. Plans of River Embankments, Rafts, and Appliances for floating Timber. 



•i. Machinery or Models for Transporting Timber and Transplanting Trees. 



f). Saw-mills — Wood-working Machinery of every description, and Pulping 

 Apparatus, in motion or otherwise. 



6. Fencing Materials of all kinds, including Gates and Stiles. 



CLASS IL— FOREST PRODUCE, RAW AND MANUFACTURED. 



1 . Collections of Timber S])ecimens and Ornamental Woods : 



a. Indigenousi or Naturalized. 

 h. Exotit-. 



2. Woods used for Ordnance— as Gun Carriages, &c. 



3. VV^oods used for Railway Purposes— Natural or Prepared. 



4. Wood Pavements. 



5. C!ooperage— Tubs, P>arrels, &c, 



0. Wood Carving and Turnery, with Tools used, 



7. Basket and Wicker Work. 



8. Fancy Woodwork, including Veneers, Parquetery, Bog Oak articles, Stained 

 and Coloured Woods, A:*'. 



!». Wood Engraving, with Samples of Wood. 



10. Bamboos, Canes, Reeds, and Manufactures therefrom. 



11. Tanning Substances — Barks, Extracts, &c. 



\± Dyeing Substances — Woods, Roots, Flowers, d'C. 



13. Barks, including Cork. 



14. Fibres, and Fibrous Substances. 



15. Materials for Paper IVfanufacture. 

 IG. Gums, Resins, and Gum Elastics. 



