The year 1851, while he was lecturing on physiology at Konigsberg, saw the brilliant invention of the ophthalmoscope, an instrument which has been of inestimable value to medicine.
This incident, though in many ways disastrous, was the cause of the establishment of the foreign customs service, which has proved of such inestimable advantage to the Chinese government.
Just so with the head; but with this difference: about the head this envelope, though not so thick, is of a boneless toughness, inestimable by any man who has not handled it.
What this is cannot easily be defined; it consists, perhaps, in the beauty of the atmosphere which Tennyson contrives to cast around his work, moulding it in the blue mystery of twilight, in the opaline haze of sunset: this atmosphere, suffused over his poetry with inestimable skill and with a tact very rarely at fault, produces an almost unfailing illusion or mirage of loveliness, so that, even where (as must sometimes be the case with every poet) the thought and the imagery have little value in themselves, the fictive aura of beauty broods over the otherwise undistinguished verse.
His protection and encouragement of Caxton were of inestimable value to English literature, and in the preface to the Dictes the printer gives an account of his own relations with the statesman which illustrates the dignity and modesty of Lord Rivers in a very agreeable way.
These explorations cover every branch of natural science and resulted in publications of inestimable scientific value.
Gambetta rendered France three inestimable services: by preserving her self-respect through the gallantry of the resistance he organized during the German War, by his tact in persuading extreme partisans to accept a moderate Republic, and by his energy in overcoming the usurpation attempted by the advisers of Marshal MacMahon.
He introduced into the Danish literature of his time inestimable elements of lucidity and purity.
For fifty-eight days Nadir Shah remained in Delhi, and when he left he carried with him a treasure in money amounting, at the lowest computation, to eight or nine millions sterling, besides jewels of inestimable value, and other property to the amount of several millions more.
But even here Ultramontanism gained ground and derived inestimable assistance from the blunders of government after government - witness the conflict of the Prussian administration with Archbishop Droste-Vischering.