I should not have taken any notice at all of your pretentions, had not you publikly, and before so illustrious a company as that of the Royal Society, endeawourd to detract from a performance, that I had intended as a not unworthy homage to that honorable Assembly, of wich I have the honour to be a member above thirty years, and for the same reason I have desired, that this my answer should be read publikly in the Royal Society, before it be delivered to you. — I am, Sir, with much consideration
Your very humble servant
S. Klingenstierna.
Some months ago I have wrote you a letter in french, because that language is a little more familiar to me than the english. In that letter I requainted you, Sir, that I had not succeded in making a telescope with the two glasses you had sent to me by Mr. Ferner, because there are some veins in them, and therefore I desired you to send me other glasses, free from such veines together with two prismas, one of crown-glass, the other of flint-glass, (oläsligt ord) for trying the true proportions of their respective dissipations. And as I have not since had any answer from London about these things, I take the liberty to recommend them a-new upon this occasion. I hope you will find upon second thought, that I have not given you any occasion to be angry with me and to refuse to serve me in the way of your profession. I know very well, that the generality of mankind is more apt to pardon the wrongs they have recived than those they have done, but I hope you will be an exeption from the rule and that would do honour to your caracter.
Den uppsats, som Klingenstierna omnämner i föregående brev, är införd i Philosophical Transactions 1762.
Dollond antog ej hans utmaning att tävla om det av akademien i Petersburg utfästa priset. Klingenstierna inlämnade däremot en avhandling, innehållande en fullständig teori för både akromatism och aplanatism, och vann priset,
