COMPUTATION BY A CEIILD. 



3, Benzoate of potash, 



4, Carbonate of lime and of magnesia, 



5, Acetate of magnesia (questionable), 

 G, Sulphate of potash, 



7, Muriate of potash and of soda, 



8, Colouring vegetable matter, 

 Q,~A little iron. 



Some Account of Zerah Colburn, an American Child, ivho 

 possesses some very remarkable Powers of solving Questions in 

 Arithmetic by Computation, without Writing, or any visible 

 Contrivance. 



[The present article is copied from a printed paper, which I ob- 

 tained from Messrs. Johnson and Co., booksellers, in St. Paul's 

 Church-yard. This boy has been publicly exhibited in America 

 and in London, and some time ago subscriptions were solicited 

 for placing him to be educated under the inspection and care of 

 several mathematical gentlemen : but I have been informed, 

 that the plan was relinquished, from some reasons on the part 

 of his father ; and he is again to be seen by the public. A 

 subscription is now solicited for publishing a portrait of him 

 on the following terms J 



ZERAH COLBURN, a child just eight years oj age, RemarkaM , 

 without any previous knowledge of the common ru'e; of powers of com* 



arithmetic, or even of the use and power of the Arabic numerals, P lltat,onin a 



. child, 



and without having given any particular attention to the subject, 



possesses (as if by intuition) the singular faculty of solving a 



great variety of arithmetical questions by the mere operation oj 



the. mind, and without the usual assistance of any visible symbol 



or contrivance. 



This print will be engraved from a drawing by Mr. Trumbull - t 

 and the size of it will be about J 2 inches by 10. 



The price to subscribers will be One Guinea, to be paid at 

 the time of subscribing : and the plates will be delivered accord- 

 ing to the order of subscription. 



The following gentlemen (who are well acquainted with the 



extra* 



