Page images
PDF
EPUB

likewise greatly enriched the collections of the academy of Berlin, during the twenty-five years which he passed in that city. He presented several memoirs to the Academy of Sciences of Paris, the prizes offered by which he ten times succeeded in carrying or dividing; nor did he disdain to contribute to the transactions of less illustrious associations of the learned. In fine, it requires the incontrovertible evidence of facts to convince us that so many labours can all have been performed by one man, who passed the last seventeen years of his life in a state of blindness. As a proof that even this statement rather underrates than exaggerates the amazing industry and fertility of Euler, we may just add, that, in the list of his works already referred to, there are enumerated, of separate publications alone, twenty-nine volumes quarto, and two octavo, in Latin; one volume quarto, and six octavo, in German; and five volumes octavo, in French.

We may mention still another, though certainly a very inferior name, that of the late Dr. HENRY MOYES. Moyes was born at Kirkaldy, in Fifeshire, and lost his sight by small-pox before he was three years old, so that he scarcely retained in after-life any recollection of having ever seen. Yet he used to say, that he remembered having once observed a water-mill in motion; and it is characteristic of the tendencies of his mind, that even at that early age his attention was attracted by the circumstance of the water flowing in one direction, while the wheel (having been what is called an undershot wheel) turned round in the opposite, a mystery on which he reflected for some time before he could comprehend it. Blind as he was, he distinguished himself when a boy, by his proficiency in all the usual branches of a literary education. But "mechanical exercises," says Mr. Bew, who has given a short account of him

6

66

in the first volume of the Memoirs of the Literary and Philosophical Society of Manchester,' were the favourite employments of his infant years. At a very

early age he made himself acquainted with the use of edged tools so perfectly, that, notwithstanding hist entire blindness, he was able to make little windmills; and he even constructed a loom with his own hands, which still shew the cicatrices of wounds he received in the execution of these juvenile exploits." Besides a knowledge of the ancient languages, and of music, he is stated by Mr. Bew, who became acquainted with him about the year 1782, to have made himself extensively conversant with Algebra and Geometry, and with Chemistry, Mechanics, Optics, Astronomy, and the other departments of Natural Science. At this time he was engaged in delivering lectures on Chemistry and Natural Philosophy in the different large towns throughout the country. He used to perform all his experiments, we are told, with his own hands, and with extraordinary neatness. Moyes possessed all that extreme delicacy in the senses of touch and hearing for which the blind have usually been remarkable. We have been told, that having been one day accosted in the street by a young friend whom he had not met with for a good many years, his instant remark, on hearing his voice, was, how much taller you have grown since we last met! When first brought into a company, his custom was to remain silent for a short time, until by the sound of the different voices he had made himself acquainted with the size of the room, and the number of persons in it. He was then quite at his ease, readily distinguished one speaker from another, and shone greatly himself by his powers of conversation. Although at that time not in affluent circumstances, and having indeed nothing to depend upon except the very precarious

[ocr errors]

occupation to which he had betaken himself, he was remarkable for his cheerfulness and buoyant spirits. He contrived for himself a system of palpable arithmetic, on a different principle from that of Saunderson, and possessing the advantage in point of neatness and simplicity. An explanation of it may be found in a letter from himself, inserted in the Encyclopædia Britannica' under the article Blind. Dr. Moyes, who must have been a person of extraordinary mental endowments, and who affords us certainly, next to Saunderson, the most striking example on record of attainments in the Mathematics, made without any assistance from the eye, received his degree from a college in America, in which country he lectured for some years. He eventually made in this way a good deal of money; and some time before his death had retired to the town of Pittenweem, not far from his native place, where his society was much courted. His lectures

are said to have been well delivered, and his explanations were eminently perspicuous. It has been reported that he could distinguish colours by the touch; but as this circumstance is not mentioned in his friend Dr. Blacklock's article just referred to, we may fairly assume that he did not himself pretend to the possession of any such power.

CHAPTER XVIII.

Difficulties occasioned by Blindness conquered. Homer; Milton; Salinas; Stanley; Metcalf; Henry the Minstrel; Scapinelli; Blacklock; Anna Williams; Huber.

MATHEMATICAL investigation is, strictly speaking, merely a mental exercise, and it is certainly conceivable that every theorem man has yet demonstrated in abstract science might have been discovered by him without the aid of his external senses. But, on the other hand, every operation of mind is so greatly facilitated by the employment of sensible symbols, and especially the processes of acquiring, apprehending, and recollecting knowledge, as well as of pursuing long and intricate calculations or deductions, receive such important assistance from those lines, figures, letters, and other marks which may be made to present the record of every thought faithfully to the eye, that we are justified in quoting any remarkable case of progress, even in abstract science, attained without the aid of this invaluable organ, as a noble example of what perseverance may accomplish in the face of the most formidable difficulties. It is much even for the mind to rise superior to so crushing a calamity as the loss of sight, and to maintain or recover its spirit of exertion under a deprivation which may be said to take from it for ever that which nature has appointed to be at once the chief helpmate and best sweetener of its labours. It would seem almost as if life could scarcely continue desirable to him whose hourly

thought may be expressed, in the language, familiar to all, of Milton's beautiful and pathetic lamentation:

with the year

Seasons return; but not to me returns
Day, or the sweet approach of even or morn,
Or sight of vernal bloom, or summer's rose,
Or flocks, or herds, or human face divine;
But cloud instead, and ever-during dark
Surrounds me, from the cheerful ways of men
Cut off, and, for the book of knowledge fair,
Presented with a universal blank

Of Nature's works, to me expunged and rased."

What an attestation to the medicinal value of intellectual labour, that it has so often cheered even such desolation as this! and how strong must be the natural love of knowledge in the human mind, that even in the midst of such impediments to its gratification it has in so many instances so eagerly sought and so largely attained its end! After the examples we have mentioned of individuals who in this state of blindness have distinguished themselves by their eminence in the severest exercises of the mind, it may be thought less surprising that others should, in the same condition, have devoted themselves with success to pursuits of a less laborious character, and not so rigorously taxing the attention and the memory. Poetry and music, for example, may be deemed the especially appointed occupations of the blind, as having their subject and their materials chiefly in the imagination and the affections, and being apparently better fitted to dispense with the aid of visible symbols than the intricate reasonings and calculations of science. Yet even poetry owes much of its inspiration to the eye wandering in freedom over nature; and more to that serenity and gladness of the soul, which so heavy an affliction as the loss of sight is apt to

« PreviousContinue »