G. EiDWEX — SOME EXPERIMENTS EN TEMPERATURE. 103 



XXXV. On some Experiments in Temperature. 

 By a. Hadwen, Esq., E.H.S. 

 Being interested in horticulture, yet, unfortunately, denied a 

 climate suitable for trying out-of-door experiments, it occurred to 

 me that if I made an application to the Council of the Royal 

 Horticultural Society, they might, perhaps, permit my experiment 

 to be tried at their Garden at Chiswick, already rendered famous 

 by the valuable thermometrical readings that have been taken 

 there for so many years. I therefore wrote and asked that a few 

 additional daily observations might be taken for me. This appli- 

 cation they in the kindest manner acceded to, and the subject was 

 warmly taken up by Mr. Bobert Thompson, who was only too 

 glad, he wrote me, to be of service to horticulture. My applica- 

 tion was that, in addition to the daily maxima and minima in the 

 open air, the maxima and minima of a south wall should be taken, 

 and the maxima and minima of the large conservatory. In this 

 latter case I asked that the progress of the crop should be noted, 

 as also when fire heat was used. Thus the matter rested till I 

 went up to the great International Blower Show, where I en- 

 countered the Bev. M. J. Berkeley, who invited me to write a few 

 notes explanatory of my reasons for making this request, so that 

 when the result of the observations was published in the Journal 

 of the Society, the Bellows would be better able to understand the 

 value of the tables. This, I thought, was more than I was able to 

 perform ; but, subsequently, I have seen in the Journal of the 

 Society the paper on u Border-heating," by the Bev. W. Kingsley, 

 and his concluding remarks have not only accorded with my own 

 opinion, when he says, " I am sure that unless our experiments 

 are based upon some principle to begin with, they will never be 

 of value for making correct inductions : and so I shall be glad to 

 give some time to experiments of a scientific kind in order to 

 obtain results that, as an individual, I should never live long 

 enough to see, but which by the united efforts of many may be 

 arrived at in a few seasons," — but I have also felt such a strong 

 desire to assist him in his laudable efforts, that I have concluded 

 to write a few notes to try and draw the attention of the Bellows, 

 not only to the value of such scientific experiments, but also 

 to point out to them my reasons for thinking the garden of the 

 Society at Chiswick possesses peculiar advantages for such experi- 

 ments. The first is, that to be of any use to horticulturalists, it is 

 of the utmost importance that the experiments should be made by 

 some one of experience, whose interest in horticulture is un- 

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