EXTRACTS PROM PROCEEDINGS. 



Ixxv 



Gilbert suggested that the ozone might be the effect and not the 

 cause, and might only have a relation of coexistence. The Se- 

 cretary was directed to communicate with Mr. Henry with a view 

 to induce him to undertake experiments. 



A conversation then took place respecting the effect of elec- 

 trical condition on insect life, and the facilities afforded by cer- 

 tain conditions for studying the habits of insects. 



Dr. Gilbert laid on the table specimens of the " Bed Tiust " 

 and " Take All " which have done so much damage in South Aus- 

 tralia, of which Mr. Berkeley undertook the examination, and 

 promised to give a report at the ensuing Meeting. 



Dr. Yoelcker called attention to the bad system of cultivation 

 practised in South Australia, the rotation of crops being often 

 entirely neglected. 



- A conversation then took place with respect to the effect of 

 Charcoal on Orchids, Mr. Bateman speaking very unfavourably 

 of its use in cultivation, many orchids refusing to grow upon 

 it. Much inconvenience arises from the use of woods which soon 

 decay, the weight, however, of more durable woods being a great 

 objection to their use. 



The meeting was then adjourned to the 15th of December, the 

 subject for discussion being the Pruning of Eorest Trees. 



Extracts of Letters from Mr. J. Anderson Henry. 



Hay Lodge, Trinity, Edinburgh, 

 August 15, 1868. 



I early this season set myself to work on various crossing-ope- 

 rations, travelling with some of them into new fields, with a view 

 to report to the Secretary, at the close of the season, what pro- 

 gress I had made. And, as I observe, from a notice just received, 

 there is yet another Meeting to be held (on the 18th) ere the ad- 

 journment to November, I embrace the opportunity to intimate, 

 through you, as I am not sure of our Secretary's address, of such 

 being my intention. 



I may, for the present, merely mention that I have devoted a 

 great share of my experiments to the genus Primula. And, in 

 doing so, I had specially in view the testing of the dimorphic law 

 discovered by Mr. Darwin, and trying how far it could be found to 

 extend in accomplishing alliances between various members of 

 that pretty numerous tribe. And if all the seeds I have got 

 ripened and sown from such experiments come true (and I have 



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