an Enquiry into the Vestments worn by Priests before the feventh Century in their public. Ministry, what Veffels, what were the Form and Situation of Churches among the French; of all which he minutely explains every part in particular, together with their Ornaments. He concludes this firft Book with a fhort Dif fertation upon the Custom of referving the Eucharift in order to give it as a Viaticum to fuch as were dying, as alfo upon the place where it was kept. In the fecond Book the Author examines into the Lectionarium, and gives us the beginning and end of all the Leffons contain'd in it, together with explanatory Notes thereupon. He fhews its antiquity from the fmall number of Festivals which it enjoins, and from the Form of its Characters; which, compared with those to be found in his fifth Book, de Re Diplomaticâ, plainly appear to be Merovingian Characters; of which he gives us a Specimen, that every one may judge of its Antiquity. He concludes it belong'd to the Gallican Church, as well from its being written in France before the Gallican Ritual was introduced there, as from its Leffons being difpofed according to the ancient order, obferved in all the Gallican Churches; befides its containing an exceeding fmall number of Saints days, one of which is appointed to St. Genevieve, whofe Worship (there being in those days fo few Festivals) other Nations did not fo much mind. The Author, in his third Book, gives a very full and ample account of three very ancient Mafs-Books, viz. Miffale Gothicum, Miffale Francorum, and Miffale Gallicanum, which he inferts entire, by reafon the Copies of the Roman Edition Edition are extremely fcarce, and proves that they were in ufe in the Gallican Church in the Celebration of Mafs. He likewife takes a great deal of pains to prove from these Miffals, that the Doctrine of the Church of Rome in regard to the Pope's Supremacy, and Tranfubftantiation was in those Days believed by the Gauls. To this Work the Author has added a very learned Enquiry into the Rife and Progress in. the Gallican Churches, of thofe Prayers, which are to be faid every day by the Priefts of the Church of Rome, and now pafs under the name of the Breviary. He clofes the whole with two Appendixes, the first whereof contains many very valuable Pieces of Antiquity, drawn partly from the Mofarabic Miffal, and partly from other Manuscripts extremely ancient, and which wonderfully illuftrate the ancient Gallican Liturgy. The other from the Lectionarium Gallicanum gives us a view of the Leffons of Scripture which vary from the vulgat Tranflation. The Author throughout his whole Treatife fhews himself incomparably well versed in Ecclefiaftical Antiquity, and well worthy of the Praises bestowed on him by the Doctors of the Sorbenne after an examination of this his Work. ARTICLE L ARTICLE IV. Hiftoire de l'Academie Royale des Sciences. That is, The Hiftory of the Royal Academy of Sciences for the Tear 1727. with the Mathematical and Phyfical Tranfactions for the fame Year, taken from the Regifters of the Academy. Printed in the Royal Printing-House at Paris, 1729. T い HE Hiftory of the Royal Academy of Sciences, of which the present Work is a Continuation, is of it felf fo well known to the Learned, that it would be needless to say any thing here in its commendation. Every one knows with how many beautiful discoveries it has enriched the Republic of Letters, laying open even to an ordinary Capacity, the most secret and abftruse Myfteries of Nature. The other Volumes already publifhed have been mentioned by the other Journalists; of this, as yet never mentioned, we intend here to give the Reader fome account, and fhall firft lay before him a general View of what is contained, as well in the Hiftory, as in the Tranfactions, and then felect an Obfervation or two, the inferting which at length will, we hope, be agreeable to the Reader. The Hiftory treats of the following matters, PHYSIQUE PHYSIQUE GENERALE. Sur des os d'Elephans trouvés fous terre. Obfervation de Phyfique Generale. Sur ce que le Nerf intercoftal fournit des Efprits aux yeux. Sur la Vûe des Enfans. Sur les Mouvemens des Lévres. Diverses Observations Anatomiques. CHYMIE. Sur le Verre des Bouteilles, ou fur la Diffolubilité de plufieurs Verres. Sur le Froid qui refulte ordinairement du mélange des Huiles Effentielles avec l'Esprit de Vin. Sur un Sel naturel de Dauphiné. Sur le Corail. BOTANIQUE. Sur une Vegetation particuliere qui vient fur le Tan. ·ARITHMETIQUE. Sur quelques Proprietés nouvelles des Nombres. GEOMETRIE. Sur le Roulement des Polygones réguliers. Sur les Polygones réguliers circonfcrits & infcrits. Sur un nouveau Developpement des Courbes. ASTRONOMIE. Sur le premier Satellite de Jupiter, & fur les Tables que feu M. Caffini en a données. Sur la Question, fi la Lune tourne autour de la Terre, ou la Terre autour de la Lune. MECHA 1 MECHANIQUE. Sur la force des Revêtemens, qu'il faut donner aux Levées de Terre, Digues, &c. Sur l'Impulfion oblique des Fluides. Machines, ou Inventions approuvées par l'Academie en 1727. Eloge de M. de Malezieu. THE Tranfactions contain a great number of very learned and curious Enquiries, Experiments, Differtations, Obfervations, &c. con cerning things belonging to each of the abovemention'd Sciences. We fhall here infert an Experiment made by M. Maupertuis, upon one of the Species of Salamanders. า THIS learned Gentleman, without entring into a detail of all the feveral Species of Salamanders, or of what many have written about them, gives us a few curious Obfervations made by him upon one Species of this Animal, that is to fay, the Terreftrial, as the Naturalifts call it. THIS is a kind of Lizard, about five or fix inches long. Its Head is broad and flat like that of a Toad, the Feet likewise resemble rather those of that Creature than the Lizard's, whofe Body and Tail it has, tho' both of them bigger. However, its Tail does not end in a fharp Point, like that of the Lizard, but may be about a line diameter at the extremity of it. THE upper part of this Animal is black fpotted with yellow, its Belly brown, and fometimes inclining to yellow; two yellow ftripes arife from the two fides of the Head over the Eyes, and run parallel to that part where the Tail begins. Thefe ftripes generally terminate towards the middle of the Body, and |