| Description | (Sent by coach.) (This was added to the present file after the documents had been numbered.)
Birmingham May
Dear Sir
I received yours of Saturday this morning only-I do not see that the Iron Cramps would be of any use what I would reccommend is as follows [Here there is a diagram, to which the following words refer] a,a,a,a, are Rivets about 3/4 inch diar to be riveted with the points Red hot which if well done will pull it Closer than screws, they may be Placed from 4 to 6 inches asunder and there must be one beyond the end of the Crack on each side-If the Rivets should be too difficult in execution screws tapped into the Ring b.b. may do-In putting the Cylinder Bottom joint together Care must be taken to fill the joint with pasteboard &c quite to the outside all of one thickness if this has not been done before I should imagine the crack to be as much owing to that as to any thing else-at least J. Dudley crackt the upper end of Wheal Union air pump by that method It was cured by a Copper Jacket and a screw hoop round the Barrel but we had no opportunity of a flanch near the upper one to screw it to or I should have preferred something like what I now recomend as to the Crack itself you will easily make it tight by some sort of plaister, provided the joint be supported quite to the outside-Somehow my hand shakes so much that it is grievance for me to write just now So having no news, I beg leave to return you the advice you gave of bearing a good heart and ever remain
Dear Sir
Yours affectionately
James Watt
[Address-label:] Mr Boulton / at Mr Wm. Mathew's / Green Lettice lane / London
[Noted on the outside by Zaccheus Walker] Boulton & Fothergill will write Messrs. Matthews & Barton Per Post, As Mr Fothergill is not come in time enough to Endorse some Bills, otherwise wd. have sent them by the Machine as Mr. Watt ordd. this L're to be sent Per Coach
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