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in their proceedings which, as thcy are reported and indeedgiven at füll length in the Philosophical Magazine, would pro-duce an early publication and show that the letters and thematter had been at the Royal Society. All your letters gaveme to understand that your papers would appear immediatelyin the "Archives" and also probably in some othcr form, so Icould not promise Mr Christie an original memoir from you.You must correct me if I have been in error.

From your letters I conclude \ve shalll have the pleasureof seeing you this summer either at York or here or both.Speaking of York reminds me that a communication from youon your subject of ozone and your last discoveries would beof great value to the Association and sure to be warmly re-ceived. With the best wishes and remembrances from mywife and myself to Madam Schoenbein and family I am ever

Yours

M. Faraday.

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Schoenbein to Faraday.

My dear Faraday

I have at last succeeded in isolating my Ozoneand think you will be rathcr curious to know how that resulthas been obtained. I made use of twelve bottles, each hoklinä"about 30 litres, put in each of them a picce of phosphorus ofabout an inch long and suffered that bod}' to act upon theatmospheric air, being contained in the bottles, at a temperatureof 12—16 0 R. for 24 hours. After that time the atmosphereof the vessels was rather richly charged with ozone. I thcncarefully removed the phosphatic acid, having been formedduring the proccss, by rinsing the bottles with distilled waterand treated their remaining gazeous Contents with a Solutionof Jodide of potassium. In shaking the bottles with that liquid