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Updated: July 10, 2025
Dollond also belonged, appointed by the Royal Society to examine, and if possible improve, the manufacture of glass for optical purposes.
Dollond listened with an amused smile to a recital of the sculptor's impressions of the Salon, which he had taken on his way from Rome. Copal was making desperate efforts to count his precious teacups, a task which their scattered positions rendered distressingly difficult.
Is she a great friend of yours, or don't you know her well enough to abuse her? I like the husband; he amuses me, though he is rather a bear. Otherwise, I should not see very much of Mrs. Dollond, I promise you." Eve smiled at the thought of Mr. Dollond's eccentricities, and then her face grew rather grave. "Shall we go into the lecture-room?" she suggested.
And even after Chester More Hall in 1729, and John Dollond in 1757, had shown that chromatic aberration could be nearly eliminated by the combination of a flint-glass lens with one of crown glass, William Herschel, who began his observations in 1774, devoted his skill entirely to the making of reflectors, seeing no prospect of much advance in the power of refractors.
Dollond, as Rainham was obliged to confess, was not good for any man to undergo. Nor was Mrs. Dollond's verdict upon their acquaintance, who had become for the space of seven days an intimate, more complimentary. "I suppose he was better than nobody," she remarked with philosophy as they made their way up the terrace.
If the production of a perfect crystalline lens in the eye you know not how as much indicated design as did the production of a Dollond achromatic lens you understand how then why does not "the swelling out" of a particular portion of the membrane behind the iris caused you know not how which, by "correcting the errors of dispersion and making the image somewhat more colorless," enabled the "young animals to see more distinctly than their parents or brethren," equally indicate design if not as much as a perfect crystalline, or a Dollond compound lens, yet as much as a common spectacle-glass?
Then, the contrivance and formation of an instrument by which those laws or facts must produce a certain sought result. Thus enlightened, our skeptic turns to his crystalline lens to see if he can discover the work of a Dollond in this.
The whole reliance for the greatest accuracy was thus thrown on the repeating circle of Dollond.
Sylvester. "Do I know the lady, I wonder? Oh! I do believe it's that Mrs. Sylvester." "Yes," said Lightmark. "If you remember, you introduced me to her at the Academy soirée last year. I expect her here this afternoon, with her daughter. I am going to paint Miss Sylvester's portrait." "Ah," said Mrs. Dollond mischievously, "and that accounts for the pastille.
Dollond having found out, after many experiments, that some kinds of glass have the power of dispersing light, for each degree of its refraction, much more than other kinds, and that on the discovery of this fact he contrived to make telescopes in which he passed the light through two object-glasses successively, one of which he made of crown and one of flint glass, so ground and adapted to each other that the greater dispersion produced by the substance of one should be corrected by the smaller dispersion of the other.
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