444? ENCYCLOPEDIE METHODIQUE. 



jjersonnes que Von veut: mais il n^est beau, c'est-d-dire, tres-ridneux, 

 qiid trois ou cinq. 



There is however a distmct work on games, entitled Biction- 

 naire des Jeuoc, faisant suite au Tome III. des Mathematiques. 

 1792. The Avertissement begins thus : Comme il y a, dit Mon- 

 tesquieu, une infinite de choses sages qui sont menees d'une 

 mani^re trbs-folle, il y a aussi des folies qui sont conduites d'une 

 maniere tr^s-sage. The work contains 316 pages of text and 

 16 plates. There are no mathematical investigations, but in three 

 cases the numerical values of the chances are given. One of these 

 cases is the game of Trente et quarante ; but the results given are 

 inaccurate, as Poisson shewed in the memoir which we have cited 

 in Art. 358. The other two cases in which the results are given 

 are the games Krahs and Passe-dix. 



The copy of the Encyclopedie MHliodique which belongs to the 

 Cambridge University Library includes another work on games 

 which is wanting in other copies that I have examined. This is 

 entitled Dictionnaire des Jeux Mathematiques.... Kn. Yii. The 

 advertisement states that after the publication of the Dictionary 

 of Games in 1792 many of the subscribers requested that this 

 treatise should be enlarged and made more complete. The pre- 

 sent Dictionary is divided into two parts ; first, the Dictionnaire 

 des Jeux Mathematiques, which occupies 212 pages ; secondly, a 

 Dictionnaire de Jeux familiers, which is unfinished, for it extends 

 only from A to Gi^ammairien, occupying 80 pages. 



The Dictionnaire des Jeux Mathematiques does not contain 

 any thing new or important in the calculation of chances. The 

 investigations which are given are chiefly taken from Montmort, 

 in some cases with a reference to him, but more often without. 

 Under the title Joueur we have the names of some writers on the 

 subject, and we find a very faint commendation of Montmort to 

 whose work the Dictionary is largely indebted ; 



Plusieiirs aiiteurs se sont exerces sur I'analyse des jeux ; on en a im 

 traite elementaire de Huygens ; on en a un phis profoiid de Moivre ; 

 on a des morceaiix tres-savans de Bernoulli sin- cette matiere. II y a 

 un analyse des jeux de hasard par Montmaur, qui n'est pas sans m6rite. 



The game oi Draughts obtains 16 images, and the game of Chess 



