Tyndall, John, 1820-1893 · London : Longmans, Green · leaf 452
eas, shown in these exquisite figures.* Mr.Tisleys apparatus reflects the highest credit u])on its ableconstructor. Sir Charles M^heatstone devised, many years ago, asmall and very efficient apparatus for the compounding For some beautiful figures of this description I am indebted to Pro-fessor… … w^ ^^^W %% ^ Fig. 199. 3 : 4.
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