82 
This Philosopher sowed the Lepidium Sativum (garden Credo) in two 
different pots; the earth of the one he moistened with pure river water , and 
that of the other with the same kind of water mixed with the super-oxy¬ 
genated muriatic acid. 
The seeds in the latter germinated much sooner than in th z former, which 
was only moistened with pure water, and which consequently could not 
communicate to the plants so much oxygen as the other, and thence too, the 
plants in it were much retarded in their growth. 
E X PE R I ME NT XXXIII....XXXV. 
The results from experiments made with other seeds; for instance, with 
the field Cabbage (Braooica camp eo trio), Turnep (Braooica napuo), and 
common Pea (Pimm oativum), exactly coincided with the experiment be¬ 
fore mentioned. 
In order to ascertain in a more satisfactory manner, that the greater pro¬ 
portion of oxygen caused the vigorous and quick growth of plants, Von 
Us lab varied his experiment. 
He took pounded quartz instead of earth, and moistened one portion of 
it with the ouperoxygenated acid , and another portion with pure water ; and 
the result was the same as in the former trials. 
EXPERIMENT XXXVI... XXXVIII. 
If the seeds, says Dr. Hooper, of Pembroke College, Oxford, in his 
excellent epitome, (entitled, Observations on the Structure and (Economy 
of Plants), of Phaseolus, Pisum, and Lepidium, (the Bean , Pea , and 
Credo) be put into silicious earth, (powdered flint-stone), and sprinkled with 
water mixed with a portion of the oxygenated muriatic acid , for in no acid 
does oxygen so abound and so laxly adhere, they germinate much sooner than 
if sprinkled with pure water . 
EXPERIMENT XXXIX.... XLI. 
A small portion of nitre in water 1 found, adds this accurate observer 
The gieat quantity of oxygen contained in nitre is shewn in note (q) page Co. 
