IMPROVEMENT* IN THE ELECTRICAL MACHINE. Q 



Wished principles. Not only is it desirable to avoid frequent 

 changes, but from the influence which language exercises 

 over our ideas, it is important to be on our guard, lest an 

 incorrect set of terms should produce inaccuracy in our opi- 

 nions. I am not unaware, that a scientific nomenclature 

 for the appearance of the clouds has been attempted by Mr. Mr. Howard's. 

 Howard, but I hope I shall not be accused of presumption, 

 if I give it as my opinion, that his set of names is much too 

 confined to be of any great use, and that the hypothesis on 

 which he proceeds is not entirely correct. 



It will be perceived, that, according to my view of the Improvement 

 -, • i n 1 x i j j 'j. oi meteorolo- 



subject, the science of meteorology must be advanced, not 



only by accurate observations of individuals, but by the 

 comparison of observations made in different places. It 

 was in a great measure from a conviction of this truth, that 

 1 have been induced to lay those remarks before the public, 

 in hopes that some of your readers, in different parts of the 

 kingdom, might cooperate with me in my plans. I should 

 wish that your journal might be made the medium of com- 

 munication, for there is certainly no other work, that on 

 every account is so well adapted for this purpose. 



I am, Sir, 

 Your obedient servant, 

 Liverpool, J. BOSTOCK. 



Mar. 28, 1810. 



II. 



On some Improvements in the Elect rical Machine. Cominu- 

 nlcated by Mr. J. Cuthbertson. 



To Mr. NICHOLSON. 

 S1K, 



8 



OME time ago I was informed by a friend of mine, that Improvement 



Professor Copland of Aberdeen had mentioned to him a va- made . in [ he 



1 electrical ma« 



luable improvement, which he had made on my electrical chine by Prox 

 ■machines. I requested my friend, to procure me the parti- Copland. 



culars 



