Faraday to William Robert Grove   9 November 1848¹

R Institution | 9 Novr. 1848

My dear Grove

Matteucci's embarrassment results I suppose from his having already had some heavy glass, but though I have none to waste I have as yet plenty for all who want it for use. I send you herewith a piece for him with my kindest remembrances. I wrote to him by the Marquess Ridolfi² only a week or two ago - else I would present him with a letter. I do not know whether you have or care for a piece of the heavy glass. I have sent another plate to be cut into pieces, it is not so good as the glass already dispersed but I have no doubt will do except it may be different in the annealing[.] However that does not prevent though it modifies the optic phenomena. When it comes back you shall have a piece if you like, only I am afraid I may forget for that is my great & continual trouble[.]

Ever Yours | M. Faraday

R. Grove Esq | &c &c &c