Transcriber's Notes
Changes to the text (in the case of corrections to typographical errors)are listed at the end of the book.
On page 45, in the reference "Beccheri's Physica Subterranea, Lipsiæ,1738 (with supplement), 8vo., 1681-80;", no satisfactory explanation of"1681-80" has been found. Note that the publication date of Physica Subterraneais 1669.
On pages 83 & 84 in the explanation of Plate III, a singlequote is used to denote the decimal point: this convention has been retained.
Frontispiece: linked to larger imageEDWARD SOMERSET,SIXTH EARL AND SECONDMARQUIS OF WORCESTER.
From a Bust by Mr. James Loft, Sculptor, exhibited at the Royal Academy,1867; and now in the Sculpture Gallery of the Crystal Palace, Sydenham.
                         SCIENTIFIC STUDIES:
OR
           PRACTICAL, IN CONTRAST WITH CHIMERICAL PURSUITS;
                            EXEMPLIFIED IN                         TWO POPULAR LECTURES.
                                  I.

                     THE LIFE OF EDWARD SOMERSET,
                                SECOND
MARQUIS OF WORCESTER,
                    INVENTOR OF THE STEAM ENGINE.

                                 II.

CHIMERAS OF SCIENCE:
ASTROLOGY, ALCHEMY, SQUARING THE CIRCLE,
                        PERPETUUM MOBILE, Etc.
                     With Illustrative Diagrams.
                                  BY
                     HENRY DIRCKS, C. E., LL.D.,
                 F.C.S., M.R.S.L., F.R.S.R., &c. &c.
          AUTHOR OF "THE LIFE OF THE MARQUIS OF WORCESTER;"                         "WORCESTERIANA;" &c.
                                LONDON:
               E. & F. N. SPON, 48, CHARING CROSS, S.W.
                                 1879.
[Pg iii]
 INTRODUCTION.
It forms a necessary part of popular lectures thatthey should possess breadth with brevity, and interestwithout too great profundity. It is possible to see alarge extent of country from a lofty tower withoutbeing cognizant of every blade of grass, the perfume ofblossoms, or the notes of the sweetest songsters of thegroves. In like manner the popular lecturer has topresent only so much to the eye of the mind as willgive the prominent features of his theme, omittingthose details over which the scholar, or the true loverof his subject, dwells with the affection of a fond parentover a darling child.
We must look with astonishment at a man of noblebirth, who in a period of civil commotion, with amonarch for his friend, and a court at his command,secluded himself during his youth in a stately ancienttower, engaged in abstruse studies and wonderful mechanicaloperations; and who, late in life, amidst theterrors of civil war was                        
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