As they are too indolent to take the trouble either to investigate or to choose, they must be led to acts of useful benevolence as they are led in everything else--by _fashion_; when you shall have rendered it perfectly ridiculous for a man of fashion and fortune _to have the appearance_ of being insensible to the most noble and most delightful of human enjoyments--that which results from doing good--you will have done more for the relief of the poor than all that the Poor Laws can ever effect. Deeply impressed with the necessity of rendering it _fashionable_ to care for the poor and indigent, and contribute to their relief and comfort, in order to diffuse in England that spirit of active benevolence you are kindling, I am apt to insist, perhaps with too much prolixity, on that important point. I am anxious to hear of the execution of your plan with regard to Bridewell. A well arranged House of Industry is much wanted in London. It is indeed absolutely necessary to the success of your undertaking, for there must be something _to see_ and _to touch_, if I may use the expression, otherwise people in general will have but very faint, imperfect, and transitory ideas of those important and highly interesting objects with which you must make them acquainted in order to their becoming zealous converts to our new philosophy, and useful members of our community. Pray read once more the ‘Proposals,’ published in my second essay. I really think that a public establishment like that there described might easily be formed in London, and that it would produce infinite good. I will come to London to assist you in its execution whenever you will in good earnest undertake it. The third essay was on ‘Food and Feeding the Poor; Rumford Soup and Soup-Kitchens.’ The fourth on ‘Chimney Fire-Places.’ The fifth on ‘Several Public Institutions Founded in Bavaria; on Nurseries for Genius; for Horses and for Cattle.’ During 1797 and 1798 Rumford published in England a second volume containing four essays. These were on the ‘Management of Fire and the Economy of Fuel;’ on the ‘Propagation of Heat in Fluids,’ extending to liquids, the doctrine which he had before advanced respecting elastic fluids; on the ‘Propagation of Heat in various Substances;’ and an ‘Experimental Inquiry concerning the Source of Heat Excited by Friction.’ An account of this last essay must be given here, because from it Count Rumford derives his chief scientific reputation.