original form. The liquid passes into a firm jelly, often 

 enclosing bubbles of gas which may remain attached to the 

 shoots, looking sometimes like fruits on a stem. 



Results.-Salts of the following metals have been tried : 

 Antimony, bismuth, mercury, silver, cadmium, copper, lead, 

 aluminium, iron, chromium, nickel, cobalt, manganese, zinc, 

 barium, strontium, calcium, magnesium, uranium, yttrium, 

 zirconium, cerium, molybdenum, tungsten, and thorium. 

 The results obtained are very different with different salts, 

 and it is this which first directed my attention to the 

 matter and led me to make systematic experiments. It 

 would be too much to say that in every case one can, on 

 seeing a growth, state at once the salt that produced it, 

 yet in many cases this may be done. 



Some salts, especially those of metals which form acid 

 oxides, and those which rarely occur in nature as silicates 

 give scarcely any growths. Antimony, tin, and bismuth 

 are among these, while silver and mercury grow very 

 slowly or scarcely at all. Moreover, insoluble $ 



, most cases, although with some excepts 

 i acid havii 



ii-S the 



base alone determines the growth 

 effect. 



The results obtained with the salts of metals which have 

 yielded definite growths may be briefly summarised :- 



Silver-The nitrate was used; turns dark in colour; gave 

 one slender shoot after long standing. 



Mercuric salts- The chloride turns dark red, gives a few 

 thick branching shoots. 



Mercurousnitrate— Turns dark,swells,a few fine threads 

 produced. 



bead— The nitrate and acetate were tried, gives slender, 

 distinct, white shoots, usually not more than an inch. 

 Occasionally grows very fast. 



