HISTORY OF THE MICROSCOPE. 11 



had been completely successful. The construction of this object-glass 

 will be illustrated and explained in a future chapter. 



The rapid progress of improvement in the manufacture of the 

 achromatic compound microscope in this country has been greatly fur- 

 thered by the spirit of liberality evinced by the late Dr. Goring, Mr. 

 R. H. Solly, and Mr. Bowerbank. To the patronage of the former we 

 owe the construction, by Tulley, of the first triplet achromatic object- 

 glass, of the diamond lens, and of the improved reflecting instrument 

 of Amici by Cuthbert. 



To Mr. Solly is due the credit of bringing before the public the 

 improved microscope of Mr. Valentine, the excellent workmanship of 

 Mr. Ross j and by his intimate connection with the Society of Arts, he 

 has been the means of making its Transactions, since 1831, the vehicle 

 through which nearly all the improvements in the construction of tele- 

 scopes and microscopes have been made known to the world. The 

 achromatic microscopes now manufactured by our London makers, 

 Mr. Ross, Messrs. Powell and Lealand, and Messrs. Smith and Beck, 

 are unequalled in any part of the world. This opinion is confirmed by 

 the reports of the juries on the Exhibition of Works of Industry of all 

 Nations, 1851 ; at that time the instruments exhibited by the above 

 makers by far excelled those of all other countries. See Juries' Reports 

 for much interesting matter on this subject; article "Microscope" 

 Penny Cyclopaedia, by Mr. Ross j Cyclopaedia of Anatomy and Phy- 

 siology, by Dr. Carpenter ; Practical Treatise on the Microscope, by 

 Professor Quekett; Brewster's Treatise on the Microscope; Dujardin's 

 Observateur; Maudl, Traite pratique du Microscope; Dr. Robin, Ih(, 

 Microscope, &c. 



