A Sawdust Smudge I had been interested in certain methods
of defence against frost invented and practised by a naval aria= in floater, Captain Leivis, Presteign. He has now, I we, written a letter to The Times on the subject, giving some ben not all the advantages of his plan. It is cheap and ;quick. The ingredients are sawdust and gas-tar in equal quantities, plus 11 of swnp-oil, which can be obtained from garages after use, in fotries. The containers are 5 or 10 gallon oil-drums with holes knocked in the side ler draught. A wineglass of paraffin eatables each is be lit at once. I have keen interested in a number of farms of smacigii" and .shis seems to use the moat psasnising. it proved itself emit 1st 'the precocious attacks of the Three lee-Saints this May. How powerful is the smoke from sawdust I first realised in watching the smoking of salmon in Ireland] The knowledge of so simple and useful a device cannot be too widely spread.
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