40 5)1080

216 ft. Answ. Since the length of the Matting is required, 27, the supposed length of the room, is the correspondent term of supposition, and therefore stands last in the stating; if the demanding term 2 feet 6 inches, or breadth of the matting, were increased, the length, or term sought, would be less; it is therefore put first, and the other in the middle, according to the rule: this is a case of inverse proportion. Here the work is contracted by multiplying the first and second terms by two; and the required length comes out 216 feet, or 72 yards.

It will be easy to apply the same rule in compound proportion, in which

there is always a term of supposition of the same kind as the answer, which is to be put last in the stating, as before; and each of the remaining terms of supposition has a demanding term of the same kind, and every two corresponding terms must be arranged as directed in the above rule, placing the sign of multiplication (×) between the several terms which fall in the first place, and also between those which occupy the middle. When necessary, reduce the corresponding terms to the same denomination; then the continued product of all the middle terms; and the last term, being divided by the continued product of all the first, will give the answer in the same denomination as the third term.

The rules for contraction, when applicable, may be used as above.

Example. If the carriage of 60 cwt. 20 miles, cost £14. 10s. what weight can I have carried 30 miles, for £5. 8s. 9d. at the same rate?

14

20

SIR, It is amusing to observe the errors into which scientific men are led, by their peculiar habits of life, when those errors do not affect important practical truths. A philosophic writer, who, as we may naturally suppose, associated only with the better sort of mankind, and mistaking the circle in which he moved for a fair specimen of his species, maintained, in opposition to the doctrine of the fall, that men in general are very wise, very virtuous, and very happy. This was certainly a more fatal error than that into which one of our poets fell, who, having himself an income of £300 a year, and

forgetting that all men were not similarly situated, thought that this world was a very convenient place to live in; and could not imagine how people could find fault with a place that afforded such comfortable accommodations.

It was, I presume, from causes something like the former, that your correspondent, in Vol. I. col. 777, asserts that "The Greek Testament is a book which may be met with in almost every house." Dr. Watts, I remember, when noticing a singular opinion of a certain author, who declared, that of all the evils which he had derived from Adam, he had escaped the contagion of pride, observes, that" this gentleman must have lived much abroad, and but little at home."

He

if he

The reverse of this appears to be the case with the writer in question. appears to live much at home, or, travel far beyond the sight of his library, his visits, it is presumed, are confined chiefly to the literati, in whose houses indeed Greek Testaments may be always found. On the contrary, it has been my lot to travel a great deal. I have been through many counties, and in many cities, towns, and villages; I have visited thousands after thousands of houses; and being rather of a bookish turn, I have examined hundreds of libraries belonging to the middle and the lower classes of society, and I can seriously assure you, Sir, that I never beheld a single Greek Testament in any house in my life.

As your Magazine is circulated in America as well as in England, unless this error be corrected, it will impose

upon the judgment of those persons whose minds are composed of" matter" capable of taking any impression. While others made of different materials, may petulantly bestow upon that representation of English learning, a name which it does not deserve.

As the learned author does not wish

his treatise to " display aught of the parade of learning," so neither, it is presumed, would he wish it to create misconception, or misrepresentation. By inserting the above, you will oblige, Sir, your's, &c. A TRAVELLER.

As

On "Pardon, not an Acquittal.”
MR. EDITOR.

several gentlemen have lately given me to understand, that the minister alluded to, in the article "Parcol. 729,) speaks with peculiar pleadon, not an Acquittal," (inserted No. 8, sure of the "drubbing" which he imagines I have received from Pudicus in reply, (inserted No. 10, col. 958,) rather premature; which I hope will I beg leave to say, that his triumph is appear when I explain my meaning. I take the word, Acquittal," to imply innocence in the abstract, or A freedom from the suspicion of guilt volve an absurdity, to make use of or an offence." Does it not then inthat term in order to express the justification of a sinner before God, either in the present or future world?

66

66

If this be admitted, which I think is plain, it follows, that the communication by Pudicus, above referred to, is to no purpose as it respects a reply to the article in question. I am, Sir,

With much esteem,
Your's, &c.

Newcastle-under-Lyne, 12th Feb. 1820.

Anatomy.

ALEXANDER.

TO THE EDITOR OF THE IMPERIAL MAGAZINE.

SIR, IT is very evident, that the immortal soul of man cannot be more delightfully employed, than in the contemplation of the goodness of Jehovah, as manifested in the redemption of the world by Christ Jesus. I conceive it

equally evident, that it is the duty, and that it will be the delightful employment of every rational creature, to survey with admiration and gratitude the works of creation. It is impossible to take even a superficial glance around us, without immediately discovering a multiplicity of objects, that furnish us with additional proofs of the condescending regard of God to man.

If we ascend in our imaginations to the heavens, we cannot but discover the glory of God, and his concern for the welfare of mankind, conspicuously manifested in the appointment of that greater light to rule the day, and those lesser lights to rule the night. But in the earth we inhabit, we discover imnumerable tokens of his care and goodness. The situation and furniture of the earth, open immense fields, in which the human mind may be continually finding something new, calculated to afford the most rational satisfaction and enjoyment. But perhaps there are not any of the works of God, in any instance which display his wisdom in a more conspicuous manner than the formation of the human body. I am impressed with a conviction, that there is not an individual in existence, who considers a knowledge of the structure of his own body unnecessary. It must be the deliberate opinion of every thinking person, that a general if not a particular knowledge of Anatomy and Physiology, is not only necessary, but is attended with many advantages. Under the impression that a general outline of the various doctrines of the science of Anatomy might be rendered useful to your numerous readers, I here send you my mature thoughts on the first doctrine, viz. Osteology; and I shall take the liberty of making a few extracts from Hooper's Vade Mecum. I have introduced what I have to say, by a few preliminary observations, relative to the growth of this science. I am, dear Sir,

Your ardent admirer,

LEO. LEDBROOK, Surgeon.

Jan. 14, 1820.

Anatomy is a science that explains the structure and use of the various parts of the corporeal frame. The human body consists of solids and fluids. The former comprehends bones and cartilages; the latter, all the other parts.

The science of Anatomy was very

little known by the ancients. Although Hyppocrates, the father of medicine, who lived about A. M. 3600, was a far greater anatomist than had ever existed prior to his time, or than existed for several ages afterwards, his knowledge of the structure of the body is considered, by the moderns, as being very superficial. He had no perception of the distinguishing features of nerves, arteries, veins, and tendons. His notions of the use of the heart, lungs, and liver, were confused, and agreeable to the philosophy of the day in which he lived; viz. that all bodies were composed of earth, air, fire, and water. The prejudices of men in those days, appear to be one great reason why the science of Anatomy was so generally neglected. It was, however, afterwards studied in the schools of Athens and Alexandria; but the difficulty of procuring subjects for dissection appears to have been one reason why the students of the former did not make any considerable progress. The school of Alexandria appears to have been a long time pre-eminent; but still the science of Anatomy did not make any great proficiency for the first 15 centuries of the Christian era; nor was it brought to any considerable perfection until the beginning of the 17th century, when the bright genius of our immortal countryman, Harvey, dispelled the clouds that hung over the minds of Hyppocrates, Aristotle, Erisistratus, Herophilus, Celsus, Galen, Abdollopih, Vesalius, Eustachius, Drianda, Sylvius, and Fallopius. And though the important discovery which Harvey made, respecting the circulation of the blood, will ensure the greatest respect to his character, even to the latest posterity; yet he had many enemies, who, through envy at his popularity, endeavoured to depreciate his unparalleled worth in the eyes of those who had candour to examine the subject with impartiality. And notwithstanding he wrote on the subject of the circulation of the blood more than 200 years ago, it has never been described in a more true, simple, and elegant manner. After he made this great discovery, Aselius, an Italian, discovered the lacteal vessels. The lymphatic vessels were discovered in 1653, by Rudbeck and Barthein, which have been more fully explained since that time by Glysson.

Our knowledge of the human body