Yet it is not impossible that autobiography of this sort has an effect the reverse of stimulating upon some people. It is pleasanter to read of heroes than to be a hero oneself. The story of conquest is inspiring, but the actual process is apt to be tedious. One’s nerves are tuned to a fine energy in reading of Priestley’s efforts to accomplish a given task. ‘I spent the latter part of every week with Mr. Thomas, a Baptist minister, … who had no liberal education. Him I instructed in Hebrew, and by that means made myself a considerable proficient in that language. At the same time I learned Chaldee and Syriac and just began to read Arabic’ This seems easy in the telling, but in reality it was a long, a monotonous, an exhausting process. Think of the expenditure of hours and eyesight over barbarous alphabets and horrid grammatical details. One must needs have had a mind of leather to endure such philological and linguistic wear and tear. Priestley’s mind not only cheerfully endured it but actually toughened under it. The man was never afraid of work. Take as an illustration his experience in keeping school.
He had pronounced objections to this business, and he registered his protest. But suppose the alternative is to teach school or to starve. A man will then teach school. I don’t know that this was quite the situation in which Priestley found himself, though he needed money. He may have hesitated to enter a profession which in his time required a more extensive muscular equipment than he was able to furnish. The old English schoolmasters were ‘bruisers.’ They had thick skins, hard heads, and solid fists. The symbols of their office were a Greek grammar and a flexible rod. They were skillful either with the book or the birch. It has taken many years to convince the world that the short road to the moods and tenses does not necessarily lie through the valley of the shadow of flogging. Perhaps Priestley objected to school-mastering because it was laborious. It was indeed laborious as he practiced it. One marvels at his endurance. His school consisted of about thirty boys, and he had a separate room for about half-a-dozen young ladies. ‘Thus I was employed from seven in the morning until four in the afternoon, without any interval except one hour for dinner; and I never gave a holiday on any consideration, the red letter days excepted. Immediately after this employment in my own school-rooms I went to teach in the family of Mr. Tomkinson, an eminent attorney, … and here I continued until seven in the evening.’ Twelve consecutive hours of teaching, less one hour for dinner! It was hardly necessary for Priestley to add that he had ‘but little leisure for reading.’
He laid up no money from teaching, but like a true man of genius spent it upon books, a small air-pump, an electrical machine. By training his advanced pupils to manipulate these he ‘extended the reputation’ of his school. This was playing at science. Several years were yet to elapse before he should acquire fame as an original investigator.
This autobiography is valuable because it illustrates the events of a remarkable time. He who cares about the history of theological opinion, the history of chemical science, the history of liberty, will read these pages with keen interest. Priestley was active in each of these fields. Men famous for their connection with the great movements of the period were among his friends and acquaintance. He knew Franklin and Richard Price. John Canton, who was the first man in England to verify Franklin’s experiments, was a friend of Priestley. So too were Smeaton the engineer, James Watt, Boulton, Josiah Wedgewood, and Erasmus Darwin. He knew Kippis, Lardner, Parr, and had met Porson and Dr. Johnson. His closest friend for many years was Theophilus Lindsey. One might also mention the great Lavoisier, Magellan the Jesuit philosopher, and a dozen other scientific, ecclesiastical, and political celebrities. The Memoir, however, is almost as remarkable for what it does not tell concerning these people as for what it does. Priestley was not anecdotal. And he is only a little less reticent about himself than he is about others. He does indeed describe his early struggles as a dissenting minister, but the reader would like a little more expansiveness in the account of his friendships and his chemical discoveries. These discoveries were made during the time that he was minister at the Mill-hill Chapel, Leeds. Here he began the serious study of chemistry. And that without training in the science as it was then understood. At Warrington he had heard a series of chemical lectures by Dr. Turner of Liverpool, a gentleman whom Americans ought to regard with amused interest, for he was the man who congratulated his fellows in a Liverpool debating society that while they had just lost the terra firma of thirteen colonies in America, they had gained, under the generalship of Dr. Herschel, a terra incognita of much greater extent in nubibus. Priestley not only began his experiments without any great store of knowledge, but also without apparatus save what he devised for himself of the cheapest materials. In 1772 he published his first important scientific tract, ‘a small pamphlet on the method of impregnating water with fixed air.’ For this he received the Copley medal from the Royal Society. On the first of August, 1774, he discovered oxygen. Nobody in Leeds troubled particularly to inquire what this dissenting minister was about with his vials and tubes, his mice and his plants. Priestley says that the only person who took ‘much interest’ was Mr. Hey, a surgeon. Mr. Hey was a ‘zealous Methodist’ and wrote answers to Priestley’s theological papers. Arminian and Socinian were at peace if science was the theme. When Priestley departed from Leeds, Hey begged of him the ‘earthen trough’ in which all his experiments had been made. This earthen trough was nothing more nor less than a washtub of the sort in common local use. So independent is genius of the elaborate appliances with which talent must produce results.
The discoveries brought fame, especially upon the Continent, and led Lord Shelburne to invite Priestley to become his ‘literary companion.’ Dr. Price was the intermediary in effecting this arrangement. Priestley’s nominal post was that of ‘librarian,’ and he now and then officiated as experimentalist extraordinary before Lord Shelburne’s guests. The compensation was not illiberal, and the relation seems to have been as free from degrading elements as such relations can be. Priestley was not a sycophant even in the day when men of genius thought it no great sin to give flattery in exchange for dinners. It was never his habit to burn incense before the great simply because the great liked the smell of incense and were accustomed to it. On the other hand, Shelburne appears to have treated the philosopher with kindness and delicacy, and the situation was not without difficulties for his lordship.
Among obvious advantages which Priestley derived from this residence were freedom from financial worry, time for writing and experimenting, a tour on the Continent, and the privilege of spending the winter season of each year in London.
It was during these London visits that he renewed his acquaintance with Dr. Franklin. They were members of a club of ‘philosophical gentlemen’ which met at stated times at the London Coffee House, Ludgate Hill. There were few days upon which the Father of Pneumatic Chemistry and the Father of Electrical Science did not meet. When their talk was not of dephlogisticated air and like matters it was pretty certain to be political. The war between England and America was imminent. Franklin dreaded it. He often said to Priestley that ‘if the difference should come to an open rupture, it would be a war of ten years, and he should not live to see the end of it.’ He had no doubt as to the issue. ‘The English may take all our great towns, but that will not give them possession of the country,’ he used to say. Franklin’s last day in England was given to Priestley. The two friends spent much of the time in reading American newspapers, especially accounts of the reception which the Boston Port Bill met with in America, and as Franklin read the addresses to the inhabitants of Boston, from the places in the neighborhood, ‘the tears trickled down his cheeks.’ He wrote to Priestley from Philadelphia just a month after the battle of Lexington, briefly describing that lively episode, and mentioning his pleasant six weeks voyage with weather ‘so moderate that a London wherry might have accompanied us all the way.’ At the close of his letter he says: ‘In coming over I made a valuable philosophical discovery, which I shall communicate to you when I can get a little time. At present I am extremely hurried.’ In October of that year, 1775, Franklin wrote to Priestley about the state of affairs in America. His letter contains one passage which can hardly be hackneyed from over-quotation. Franklin wants Priestley to tell ‘our dear good friend,’ Dr. Price, that America is ‘determined and unanimous.’ ‘Britain at the expense of three millions has killed 150 yankees this campaign, which is 20,000 l. a head; and at Bunker’s Hill, she gained a mile of ground, all of which she lost again, by our taking post on Ploughed Hill. During the same time 60,000 children have been born in America.’ From these data Dr. Price is to calculate ‘the time and expense necessary to kill us all, and conquer the whole of our territory.’ Then the letter closes with greetings ‘to the club of honest whigs at the London Coffee House.’
Seven years later Franklin’s heart was still faithful to the club. He writes to Priestley from France: ‘I love you as much as ever, and I love all the honest souls that meet at the London Coffee House…. I labor for peace with more earnestness that I may again be happy in your sweet society.’ Franklin thought that war was folly. In a letter to Dr. Price, he speaks of the great improvements in natural philosophy, and then says: ‘There is one improvement in moral philosophy which I wish to see: the discovery of a plan that would induce and oblige nations to settle their disputes without first cutting one another’s throats.’
Priestley lamented that a man of Franklin’s character and influence ‘should have been an unbeliever in Christianity, and also have done as much as he did to make others unbelievers.’ Franklin acknowledged that he had not given much attention to the evidences of Christianity, and asked Priestley to recommend some ‘treatises’ on the subject ‘but not of great length.’ Priestley suggested certain chapters of Hartley’s Observations on Man, and also what he himself had written on the subject in his Institutes of Natural and Revealed Religion. Franklin had promised to read whatever books his friend might advise and give his ‘sentiments on them.’ ‘But the American war breaking out soon after, I do not believe,’ says Priestley, ‘that he ever found himself sufficiently at leisure for the discussion.’
Priestley valued his own scientific reputation not a little for the weight it gave, among skeptics, to his arguments in support of his religious belief. He found that all the philosophers in Paris were unbelievers. They looked at him with mild astonishment when they learned that he was not of the same mind. They may even have thought him a phenomenon which required scientific investigation. ‘As I chose on all occasions to appear as a Christian, I was told by some of them that I was the only person they had ever met with, of whose understanding they had any opinion, who professed to believe Christianity.’ Priestley began to question them as to what they supposed Christianity was, and with the usual result,—they were not posted on the subject.