Tweets of Terrestrial Radiation. 287 



To the Conductor of the Gardeners Magazine, 



Sir, 



I DARE not directly presume to address my gratuitous 

 respondent, Joseph Hayward, Esq., author of the Science 

 of Hortiadture, &c. &c., and therefore trust to your kind- 

 ness to give insertion to a very few words by way of rejoinder 

 to the observations of that gentleman, (p. 192.) 



In the first place, I ought to consider it an honour that any 

 question proposed by me should attract the notice of one 

 who has distinguished himself so much by his writings on 

 the science of both farming and gardening. Secondly, my 

 thanks are due for his merciful consideration, in refraining to 

 give an answer which / could " not understand ; " and, more- 

 over, for the very homely instance which he has been pleased 

 to give of the organisable properties of my " mother's milk," 

 which, he assumes, gave me, during babyhood, bones, legs, 

 arms, and all other appurtenances to boot. These, however, 

 I humbly imagine, I possessed long before I yet had blest 

 my poor dear mother's sight. No doubt, that maternal fuid, 

 gave me what Sir John FalstafF called themoes -, but I much 

 question (foolishly perhaps) whether, if I had sucked till 

 now, I ever should have had another head or an extra- 

 limb. 



Mr. Hayward can hardly be serious in referring me to the 

 earthy deposit on the inside of a tea-kettle; for surely the 

 most consummate science would fail to prove that to be 

 organised matter. But this reference, I am fully persuaded, 

 was only a slip of the pen; and therefore, as in candour 

 bound, I willingly exercise that tribute of compassion due to 

 any man of science who inadvertently writes what, on re- 

 consideration, he must feel he never could intend. I shall not 

 add a blemish to the Gardener's Magazine by alluding to the 

 style of Mr. Haywai-d's letter : that speaks for itself. 



I am. Sir, yours, &c. 

 May 4. 1833. J. Main. 



Art. V. On the Effects of Terrestrial Radiation on the Processes 

 of Vegetation ; and some Account of the Chinese Method of propa- 

 gating Fruit Trees. By J. Murray, Esq. 



Sir, 



Of all the sciences, it will be granted, on every hand, none 



is more connected with horticulture than that of chemistry. 



It is indeed its sun and centre ; and, without the application 



of chemical laws and phenomena to horticulture, its principles 



