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The aplanatic triplets after Steinheil are remarkable for their large, flat field and excellent definition, free from chromatic aberration.

Mr. Orguly Bolp's large painting, entitled "Embrocation," is an interesting experiment in the handling of aplanatic surfaces, in which the toxic determinants are harmonized by a sort of plastic meiosis with syncopated rhythms.

"Thank you; I have a pretty good one of my own," Tom answered, diving into one of his pockets and bringing to light a small but powerful reading glass with an aplanatic lens.

"Kipper on toast" is not nearly so rich in carbohydrates, calories and aplanatic amygdaloids as "Kipper meat."

It was thought that the use of this Herschel aplanatic combination as an eyepiece, combined with the Wollaston doublet for the objective, came as near perfection as the compound microscope was likely soon to come.