It was her quick, intelligent action, combined with a patience, enthusiasm and powers of endurance that were most extraordinary, that made Caroline Herschel so valuable as an assistant to her brother, and enabled him to achieve the unique position which is his among the world's greatest astronomers. Had she been able to devote all her time to "minding the heavens," it is certain that she would have made many more discoveries than are now credited to her; but her service to astronomy would have been less than it was as the auxiliary of her illustrious brother. No two ever did better "teamwork"; no two were ever more devoted to each other or exhibited greater enthusiasm in the task to which they so heroically devoted their lives.[146]

In addition to her arduous and engrossing duties as secretary and assistant to her brother, Caroline found time to prepare a number of works for the press. Among these were a Catalogue of Eight Hundred and Sixty Stars Observed by Flamsteed but not Included in the British Catalogue and A General Index of Reference to Every Observation of Every Star in the Above-mentioned British Catalogue. She had the honor of having these two works published by the Royal Society. Another, and a more valuable work, was The Reduction and Arrangement in the Form of Catalogue, in Zones, of All the Star-Clusters and Nebulæ Observed by Sir W. Herschel in His Sweeps. It was for this catalogue that a gold medal was voted to her by the Royal Astronomical Society in 1828—a production that was characterized as "a work of immense labor" and "an extraordinary monument to the unextinguished ardor of a lady of seventy-five in the cause of abstract science." To her nephew, Sir John Herschel, it proved invaluable, as it supplied the needful data "when he undertook the review of the nebulæ of the northern hemisphere." It was also a fitting prelude to Sir John's Cape Observations, a copy of which great work she received from her nephew nearly twenty years subsequently, after he had completed his famous observations of the southern heavens in his observatory at the Cape of Good Hope.

"By a most striking and happy coincidence," writes Mrs. John Herschel, "she, whose unflagging toil had so greatly contributed to its successful prosecution in the hands of her beloved brother, lived to witness its triumphant termination through the no less persistent industry and strenuous labor of his son; and her last days were crowned by the possession of the work which brought to its glorious conclusion Sir William Herschel's vast undertaking—The Survey of the Heavens."

That Miss Herschel's labors in the cause of astronomy were appreciated by her contemporaries is evidenced by the honors of which she was the recipient. The first of these honors came in the form of a gold medal, unanimously awarded by the Royal Astronomical Society for her reduction of twenty-five hundred nebulæ "discovered by her illustrious brother, which may be considered as the completion of a series of exertions probably unparalleled either in magnitude or importance in the annals of astronomical labor."

It was on this occasion, when referring to the immensity of the task which Sir William Herschel had undertaken, that the vice-president of the society paid a deserving tribute to the great astronomer's devoted sister, in which is found the following statement:

"Miss Herschel it was who by right acted as his amanuensis; she it was whose pen conveyed to paper his observations as they issued from his lips; she it was who noted the right ascensions and polar distances of the objects observed; she it was who, having passed the night near the instrument, took the rough manuscripts to her cottage at the dawn of day and produced a fair copy of the night's work on the following morning; she it was who planned the labor of each succeeding night; she it was who reduced every observation, made every calculation; she it was who arranged everything in systematic order; and she it was who helped him to obtain his imperishable name."[147]

Besides this gold medal from the Royal Astronomical Society, Miss Herschel also received two others, one from the King of Denmark and the other from the King of Prussia. The latter was accompanied by a most eulogistic letter from Alexander von Humboldt, who informed her that the medal was awarded her "in recognition of the valuable services rendered by her as the fellow worker of her immortal brother, Sir William Herschel, by discoveries, observations and laborious calculations."

In 1835, when she was eighty-five years of age, Miss Herschel had the signal honor of being elected, along with Mrs. Somerville, an honorary member of the Royal Astronomical Society. As they were the first two women in England to receive such recognition for their contributions to science, it seems desirable to reproduce here an extract from the report of the council of the society regarding the bestowal of an honor which marked so distinct a change in England of the attitude that should be taken toward women who excelled in intellectual achievements. The extract reads as follows:

"Your council has no small pleasure in recommending that the names of two ladies distinguished in different walks of astronomy be placed on the list of honorary members. On the propriety of such a step, in an astronomical point of view, there can be but one voice; and your council is of the opinion that the time is gone by when either feeling or prejudice, by whichever name it may be proper to call it, should be allowed to interfere with the payment of a well-earned tribute of respect. Your council has hitherto felt that, whatever might be its own sentiment on the subject, or however able and willing it might be to defend such a measure, it had no right to place the name of a lady in a position the propriety of which might be contested, though upon what it might consider narrow grounds and false principles. But your council has no fear that such a difference could now take place between any men whose opinion could avail to guide the society at large; and, abandoning compliment on the one hand and false delicacy on the other, submits that, while the tests of astronomical merit should in no case be applied to the works of a woman less severely than to those of a man, the sex of the former should no longer be an obstacle to her receiving any acknowledgment which might be held due to the latter. And your council, therefore, recommends this meeting to add to the list of honorary members the names of Miss Caroline Herschel and Mrs. Somerville, of whose astronomical knowledge, and of the utility of the ends to which it has been applied, it is not necessary to recount the proofs."[148]