(1729-1811), and other travels. P. L. de Moreau Maupertuis (1698-1759) and C. M. de la Condamine (1701-1774) made long journeys for scientific purposes and duly recorded their experiences. The former, a mathematician and physicist of some ability but more oddity, is chiefly known to literature by the ridicule of Voltaire in the _Diatribe du Docteur Akakia_. Jean le Rond, called d'Alembert (1717-1783), a great mathematician and a writer of considerable though rather academic excellence, is principally known from his connexion with and introduction to the _Encyclopedie_, of which more presently. Chemistry was also assiduously cultivated, the baron d'Holbach, among others, being a devotee thereof, and helping to advance the science to the point where, at the conclusion of the century, it was illustrated by Berthollet and Lavoisier. During all this devotion to science in its modern acceptation, the older and more literary forms of erudition were not neglected, especially by the illustrious Benedictines of the abbey of St Maur. Dom Augustin Calmet (1672-1757) the author of the well-known _Dictionary of the Bible_, belonged to this order, and to them also (in particular to Dom Rivet) was due the beginning of the immense _Histoire litteraire de la France_, a work interrupted by the Revolution and long suspended, but diligently continued since the middle of the 19th century. Of less orthodox names distinguished for erudition, Nicolas Freret (1688-1749), secretary of the Academy, is perhaps the most remarkable. But in the consideration of the science and learning in the 18th century from a literary point of view, there is one name and one book which require particular and, in the case of the book, somewhat extended mention. The man is Georges Louis Leclerc, comte de Buffon (1717-1788), the book the _Encyclopedie_. The immense _Natural History_ of Buffon, though not entirely his own, is a remarkable monument of the union of scientific tastes with literary ability. As has happened in many similar instances, there is in parts more literature than science to be found in it; and from the point of view of the latter, Buffon was far too careless in observation and far too solicitous of perfection of style and grandiosity of view. The style of Buffon has sometimes been made the subject of the highest eulogy, and it is at its best admirable; but one still feels in it the fault of all serious French prose in this century before Rousseau--the presence, that is to say, of an artificial spirit rather than of natural variety and power. The _Encyclopedie_, unquestionably on the whole the most important French literary production of the century, if we except the works of Rousseau and Voltaire, was conducted for a time by Diderot and d'Alembert, afterwards by Diderot alone. It numbered among its contributors almost every Frenchman of eminence in letters. It is often spoken of as if, under the guise of an encyclopaedia, it had been merely a _plaidoyer_ against