XXXVl CONTENTS OF NOTES. 



controvcrtilile argiimpiits an^aiiisl it, from both Theory and Practice, 

 p. 338. — Note TV. Spt'culaliou on Heat in Trees. Experiments of 

 distinffiiished Chemists — Ruohert, Senebicr, Woodward, Sclioppctt, 

 Ingenhoutz. Thermometers kept in Trees by Jolm Hunter, p. 340. — 

 Note V. Illustrations of the Analogy between Animal and Vegetable 

 life, in the effects of Heat and Cold. Coach or Race-horse within 

 doors and without ; INIusk Ox of Melville Island ; Kamtschatka Mam- 

 moth ; Elephant ; African Negro. Trees under the Torrid Zone, 

 p. 341. — Note VII. Examination of the opinion of English Planters, 

 that "Old Trees and Young possess similar properties; therefore, they 

 should be removed on similar principles." Marshall, Author of the En- 

 cyclopedia of Agriculture. His general practical rule irreconcilable 

 with good science, p. 342. — Conclusive Experiments by Miller, p. 345. 

 — Note VIII. Curious examples of Trees laying aside, and requiring 

 the Protecting and Non-Protecting Properties. The former always 

 more slowly acquired than the latter, p. 345. 



SECTION IV. 



Note I. Malpighi, a native of Bologna ; flourished in the middle of 

 the 17th century. Grew, an eminent physician, his contemporary, and 

 father of English Phytology, p. 347. — Note II. History of the Circu- 

 lation of the Sap. Curious adaptation of it to the Circulation of the 

 Blood in Animals. Hedwig, Costi, Wildenow, Keith. Mr. Knight's 

 ingenious hypothesis. Scepticism of Mr. Keith unconquerable, p. 347. 

 — Note III. Introsusception of Food not confined to Plants. Men, 

 in certain cases, receive their sustenance by that means, as well as 

 Vegetables, p. 349. — Note IV. Erroneous to suppose that Trees are 

 without the power of Renewuig their Taproots. Yule, Sang. For- 

 syth's judicious Experiments to prove the fact, p. 350. — Theory by Mr. 

 Knight, of the effects of Gravitation on both Branches and Roots. 

 Probably unfounded. Du Hamel, Knight. Ingenious Paper by Mr. 

 Keith, to disprove the Theory, p. 350. — Note V. Disquisition on 

 Pruning. Sang, Pontey, Loudon. Errors of Pontey's System. — 

 Rash and dangerous, unless controlled by Science. — Ingenious inquiry 

 by Loudon, into the safe, as well as injurious uses of Pruning, p. 354. 

 — Idea of the best Principles of the Art. Superior Excellence of 

 Terminal Pruning, p. 356. — Note VII. Good idea of regulating Arbo- 

 ricultiiral processes by Fashion, p. 359. — Severe effect of the Western 

 Gales on Park-wood. New remedy, by balancing Trees, and Revers- 

 ing the position of their Windward and Leeward sides, p. 360. — Note 



