252 ON THE ALLOTROPY OF THE ELEMENTARY BODIES. 
respect. Even compounds of potassium are insoluble in water, 
acids, and nitromuriatic acid; are not oxidized by being heated 
to redness in dry air, and are unaltered by a low red heat in a 
current of dry chlorine. 
The facts I have adduced certainly still offer a rich field for 
speculations; yet the views advocated by me are not entirely 
without foundation. The subject deserves consideration, and 
if other inquirers give their attention to it, what is erroneous 
in the views I have brought forward will be separated, while at 
the same time that which is well-founded will be considerably 
extended. 
