On Bleaching: 353 



fiituted; t)r. Rob 1 son was perfuaded by the members to 

 undertake the duties of Secretary to its philofopbical clafs. 

 He has difcharged them in a manner highly honourable to 

 himfelf, and ufeful to the views of the Society. Pie has en- 

 riched fome of the printed volumes of its Transactions 

 with papers which fignally difplay his profound knowledge, 

 and the wide, vigorous grafp of his genius a6 a philofopher 

 and mathematician. 



In his zeal to promote mathematical fcience, particularly 

 in its application to the ufeful arts, he condefcended to con- 

 tribute to the lait edition of the Encyclopedia Brit an- 

 nica the greater part of its articles in mixed and pure 

 mathematics. They have been unanimoufly diflinguifhed, 

 throughout Europe, as infinitely the bed of the original ar- 

 ticles in that compilation. The Supplement, alfo, which 

 has been fince added to it, owes fome of its belt materials to 

 his hand. 



Having been led to think that the combination of the 

 Freemasons might, in this revolutionary age, be abufed 

 to dangerous purpofes, he broke off, fome years fince, his 

 connexion with that fraternity; and wrote and publifbed an 

 eloquent book to explain the grounds of his fears, and the 

 reaions of his fecefiion. We prefume not to judge between 

 him and his opponents in this matter : but it wilt be fortu- 

 nate if the Freemafons (hall, with one accord, confpire to 

 prove that he has misrepresented them, by the loyalty and 

 peaceable patriotic redtitude of their conduct, in every part 

 of the world. 



Soon after his return from Ruffia he entered into the mar- 

 ried ftate, and is now the father of a promifing family. 

 Some of his children are now grown up, and fettled in 

 life. 



For a confiderable number of years the ftate of his health 

 has been uncertain and languid. But nothing could induce 

 him to any continued remiilion from thole itudies in which 

 he delights and excels. 



LVIII. On Bleaching* By a Corref pendent* 

 To the Editor of the Philojbphical Magazine* 



SIR, 



N your lad number for July, p. T02, in O'Reilly's efiayon 



ired, 

 Oiat, 



1 



bleaching, it is di reded, if a bright wbiienrfs be required 

 Vol. X. / 



