All that you say of the alteration in the form of the boat strikes me, though one of the multitude in this respect, as improvement. I long to get aboard her, and be an unworthy partaker in the glory of the astonishment of the Livornese, when she returns from her cruise round Melloria. When do you think she will be fit for sea? Your volcanic description of the birth of the cylinder is very characteristic of you, and of it.[31] One might imagine God, when he made the earth, and saw the granite mountains and flinty promontories flow into their craggy forms, and the splendour of their fusion filling millions of miles of the void space, like the tail of a comet, so looking, so delighting in his work. God sees his machine spinning round the sun, and delights in its success, and has taken out patents to supply all the suns in space with the same manufacture. Your boat will be to the ocean of water, what this earth is to the ocean of ether--a prosperous and swift voyager. When shall we see you all? _You_ not, I suppose, till your boat is ready to sail--and then, if not before, I must, of course, come to Livorno. Our plans for the winter are yet scarcely defined; they tend towards our spending February and March at Pisa, where our communications will not be so distant, nor so epistolary. C---- left us a week ago, not without many lamentations, as all true lovers pay on such occasions. He is to write me an account of the Trieste steam-boat, which I will transmit to you. Mrs. Shelley and Miss C---- return you their kindest salutations, with interest. Most affectionately yours, P. B. S. [31] The passage in Mr. Reveley’s letter referred to by Shelley was as follows:-- “_Friday, 12th Nov._ “The event is now past--both the steam cylinder and air-pump were cast at three o’clock this afternoon. At two o’clock this morning I repaired to the mill to see that the preliminary operations, upon which the ultimate success of a _fount_ greatly depends, were conducted with proper attention. The moulds are buried in a pit, made close, before the mouth of the furnace, so that the melted metal, when the plug is driven in, may run easily into them, and fill up the vacant space left between the core and the shell, in order to form the desired cylinders. The fire was lighted in the furnace at nine, and in three hours the metal was fused. At three o’clock it was ready to cast, the fusion being remarkably rapid, owing to the perfection of the furnace. The metal was also heated to an extreme degree, boiling with fury, and seeming to dance with the pleasure of running into its proper form. The plug was struck, and a massy stream of a bluish dazzling whiteness filled the moulds in the twinkling of a shooting star. The castings will not be cool enough to be drawn up till to-morrow afternoon; but, to judge from all appearances, I expect them to be perfect.