An excellent apparatus has been contrived to perform these experiments with the prismatic image. The results are analogous to those already mentioned, and we shall hereafter give the particulars, making use of the labours of an accurate observer, who has been for some time carefully prosecuting these experiments.[2]
[1] Now generally called chloride of silver: the term in the original is Hornsilber.—T.
[2] The individual alluded to was Seebeck: the result of his experiments was published in the second volume.—T.
[LVI.]
CHEMICAL EFFECT IN DIOPTRICAL ACHROMATISM.
We first invite our readers to turn to what has been before observed on this subject ([285], [298]), to avoid unnecessary repetition here.