"Deucalion"—from the mythical creator of human life out of stones—was begun as a companion work: to be published in parts, as the repertory of Oxford lectures on Alpine form, and notes on all kinds of kindred subjects. For instance, before that hasty journey to Sheffield he gave a lecture at the London Institution on "Precious Stones" (February 17th, repeated March 28th, 1876. A lecture on a similar subject was given to the boys of Christ's Hospital on April 15th). This lecture, called "The Iris of the Earth," stood first in Part III. of "Deucalion": and the work went on, in studies of the forms of silica, on the lines marked out ten years before in the papers on Banded and Brecciated Concretions; now carried forward with much kind help from the Rev. J. Clifton Ward, of the Geological Survey, and Mr. Henry Willett, F.G.S., of Brighton.

On the way home over the Simplon in May and June, 1877, travelling first with Signor Alessandri, and then with Mr. G. Allen, Professor Ruskin continued his studies of Alpine flowers for "Proserpina." In the autumn he gave a lecture at Kendal (Oct. 1st, repeated at Eton College Dec. 8th) on "Yewdale and its Streamlets."

"Yewdale"—reprinted as Part V. of "Deucalion"—took an unusual importance in his own mind, not only because it was a great success as a lecture—though some Kendalians complained that there was not enough "information" in it:—but because it was the first given since that Christmas at Venice, when a new insight had been granted him, as he felt, into spiritual things, and a new burden laid on him, to withstand the rash conclusions of "science falsely so called," and to preach in their place the presence of God in nature and in man.

Writing to Miss Beever about his Oxford course of that autumn, "Readings in Modern Painters,"[38] he said, on the 2nd December:

"I gave yesterday the twelfth and last of my course of lectures this term, to a room crowded by six hundred people, two-thirds members of the University, and with its door wedged open by those who could not get in; this interest of theirs being granted to me, I doubt not, because for the first time in Oxford I have been able to speak to them boldly of immortal life. I intended when I began the course only to have read 'Modern Painters' to them; but when I began, some of your favourite bits[39] interested the men so much, and brought so much larger a proportion of undergraduates than usual, that I took pains to re-inforce and press them home; and people say I have never given so useful a course yet. But it has taken all my time and strength."

He wrote again, on Dec. 16th, from Herne Hill:

"It is a long while since I've felt so good-for-nothing as I do this morning. My very wristbands curl up in a dog's-eared and disconsolate manner; my little room is all a heap of disorder. I've got a hoarseness and wheezing and sneezing and coughing and choking. I can't speak and I can't think; I'm miserable in bed and useless out of it; and it seems to me as if I could never venture to open a window or go out of a door any more. I have the dimmest sort of diabolical pleasure in thinking how miserable I shall make Susie by telling her all this; but in other respects I seem entirely devoid of all moral sentiments. I have arrived at this state of things, first by catching cold, and since trying to 'amuse myself' for three days."

He goes on to give a list of his amusements—Pickwick, chivalric romances, the Daily Telegraph, Staunton's games of chess, and finally analysis of the Dock Company's bill of charges on a box from Venice.

Ten days after he wrote from Oxford, in his whimsical style:

"Yesterday I had two lovely services in my own cathedral. You know the Cathedral of Oxford is the chapel of Christ Church College, and I have my high seat in the chancel, as an honorary student, besides being bred there, and so one is ever so proud and ever so pious all at once, which is ever so nice you know: and my own dean, that's the Dean of Christ Church, who is as big as any bishop, read the services, and the psalms and anthems were lovely; and then I dined with Henry Acland and his family ... but I do wish I could be at Brantwood too." Next day it was "Cold quite gone."