FINIS.
London, Dec. 1, 1797
W. and S. Jones take this Opportunity of informing the Public that they have purchased the Stock and Copyright of the several Philosophical Essays by the late Mr. George Adams, of Fleet Street, and that they are now sold at their Shop in Holborn. The following are those now in print, and to be had as above.
I. AN ESSAY ON ELECTRICITY, explaining clearly and fuly the principles of that useful Science, describing the various Instruments that have been contrived either to illustrate the Theory, or render the Practice of it entertaining. The different Modes in which the Electrical Fluid may be applied to the human Frame for medical Purposes, are distinctly and clearly pointed out, and the necessary Apparatus explained. To which is now added, A Letter to the Author, from Mr. John Birch, Surgeon, on the Subject of Medical Electricity. Fourth Edition, 8vo. Price 6s. illustrated with six Plates.
II. AN ESSAY ON VISION, briefly explaining the Fabric of the Eye, and the Nature of Vision; intended for the Service of those whose Eyes are weak and impaired, enabling them to form an accurate Idea of the State of their Sight, the Means of preserving it, together with proper Rules for ascertaining when Spectacles are necessary, and how to choose them without injuring the Sight. 8vo. Boards, Price 3s. Second Edition.
III. ASTRONOMICAL AND GEOGRAPHICAL ESSAYS, containing, 1. A full and comprehensive View, on a new Plan, of the general Principles of Astronomy, with a large Account of the Discoveries of Mr. Herschel. 2. the Use of the Celestial and Terrestrial Globes, exemplified in a greater Variety of Problems than are to be found in any other Work: they are arranged under distinct Heads, and interspersed with much curious but relative Information. 3. The Description and Use of small Orreries and Planetaria, &c. 4. An Introduction to Practical Astronomy, by a Set of easy and entertaining Problems. Third Edition, 8vo. Price 10s. 6d. in Boards, illustrated with sixteen Plates.
IV. AN INTRODUCTION TO PRACTICAL ASTRONOMY, or the Use of the Quadrant and Equatorial, being extracted from the preceding Work. Sewed, with two Plates, 2s. 6d.
V. GEOMETRICAL AND GRAPHICAL ESSAYS. This Work contains, 1. A select Set of Geometrical Problems, many of which are new, and to be found in no other Work. 2. The Description and Use of those Mathematical Instruments that are usually put into a Case of Drawing Instruments. Besides these, there are also described several New and Useful Instruments for Geometrical Purposes. 3. A complete and concise System of Surveying, with an Account of some very essential Improvements in that useful Art. To which is added, a Description of the most improved Theodolites, Plane Tables, and other Instruments used in Surveying; and most accurate Methods of adjusting them. 4. The Methods of Levelling, for the Purpose of conveying Water from one Place to another; with a Description of the most improved Spirit Level. 5. A Course of Practical Military Geometry, as taught at Woolwich. 6. A short Essay on Perspective. The Second Edition, corrected, and enlarged with the Descriptions of several Instruments not contained in the former Edition, by W. Jones, Mathematical Instrument Maker; illustrated by thirty-five Copper-plates, in 2 vols. 8vo. Price 14s. in Boards.
VI. AN APPENDIX to the GEOMETRICAL AND GRAPHICAL ESSAYS, containing the following Table by Mr. John Gale, viz. a Table of the Northings, Southings, Eastings, and Westings to every Degree and fifteenth Minute of the Quadrant, Radius from 1 to 100, with all the intermediate Numbers, computed to three Places of Decimals. Price 2s.
Just Published
ESSAYS ON THE MICROSCOPE,
BY THE LATE AUTHOR,
In Quarto, with thirty-four folio Plates, separate. The Second Edition, with many
Corrections, Additions, and Improvements, by
FREDERICK KANMACHER,
Fellow of the Linnean Society.
Price 1l. 8s. in Boards.
Also in the Press,
And speedily will be published,
LECTURES
ON NATURAL AND EXPERIMENTAL
PHILOSOPHY,
In Five Volumes 8vo. The Second Edition, with upwards of Forty large Plates, considerable Alterations and Improvements; containing more complete Explanations of the Instruments, Machines, &c. and the Description of many others not inserted in the former Edition.
By W. JONES,
MATHEMATICAL AND PHILOSOPHICAL INSTRUMENT
MAKER.
Transcriber’s Notes
Depending on the hard- and software used to read this text and their settins, not all elements may displayed as intended.
Archaic, unusual and inconsistent spelling, grammar and sentence constructions have been retained; accents etc. for French and German have not been corrected unless listed below.
Paragraph numbering has been retained, also when this was not serving any obvious purpose and/or was not contiguous.
The use of italicised and non-italicised reference letters in the text has not been standardised.
The hierarchy in (sub-)section headings has been based on the text, due to the absence of a detailed table of contents and lack of visible differences between the various levels of (sub-)section headings in the source document.
The plates were originally bound separate from the text, but in the source document used they were bound together with the text. Due to the way of binding parts of most plates are invisible and discoloured near and in the gutter. Captions and credits in and around the plates have been reconstructed as far as possible.
Larger versions of the plates may not be available in all file formats, but may be accessed through the browser version available at www.gutenberg.org. In the descriptions of individual items hyperlinks have only been provided to the Plates, not to individual figures in the plates.
Page xv-xvii and Index: the (alphabetical) order of entries has not been corrected.
Errata for page 49: ‘last line’ refers to footnote 28.
Page 32, Fig. 2. and description: as printed in the source document, even though the description does not fully fit the illustration (and vice versa).
Page 74, the end, Fig. 9 and 10: 9 and 10 are reference numbers within Figure 4 rather than figure numbers.
Page 78-79, Eight magnifying lenses ... the list annexed to these Essays: there are no Figures 5 through 12 in Plate III. Several of the items described may be seen in other Plates, but with different reference and figure numbers.
Page 83-84, The two large lenses at F, Fig. 3: there are no large lenses at F, Fig.3 in Plate IX or in Plate III (or in any other Plate).
Page 84, Massachuset’s States: as printed in the source document.
Page 162, ... for the feeding the growth ...: as printed in the source document.
Page 182, ... one of these, i i, b c, Fig. 3. Plate XIII, ... and Page 183, ... the middle part i i ...: there are no reference letters i in the illustration.
Page 205, They first fold back the parts A B: the reference letters are not present in the drawing.
Page 352, Skin of the lump sucker: Plate XVIII. Fig. 7 falls in the gutter of the plate, and has no caption.
Page 446, E. eliptica: eliptica and elliptica were both used.
Page 623, the blea, the bark, and the wood: as printed in the source document.
Page 636, The roundish mouth ... a thorny margin: as printed in the source document.
Page 691, Cold-arbour lane: possibly Coldharbour Lane or Cool Arbour Lane.
Page 695, The English collection contains ...: the numbers given do not add up to the total.
Page 701, knapeseed: probably an error for knapeweed or knapweed.
Page 703, Diptera, entries Oestrus: Footnote 88 continues for three pages (294-296) in the source document.
Plate XXX, Publishd: as printed in the source document.
Changes made
Footnotes have been moved to under the text to which they belong. Where necessary, page numbers in references to footnotes have been adjusted accordingly.
The book uses long dashes as ditto marks; several of these have been replaced with the dittoed text. Where necessary, the word Ibid. in references has been replaced with the actual title.
Minor obvious typographical and punctuation errors have been corrected silently.
The Errata have already been corrected in the text.
Fractions have been standardised m⁄n.
Page xxiv: N. B. moved from bottom of page xxiii to bottom of list.
Page xxvii: deau douce changed to d’eau douce.
Page 41: f A and G a changed to f A and g A.
Page 50: pour les mois changed to pour le mois.
Page 52: that it would changed to than it would.
Page 77: The stage, Fig. f g h i changed to The stage, Fig. 1, f g h i; the screw at a changed to the screw at a.
Page 81: Plate III. B, is the stage changed to Fig. 3 B, is the stage.
Page 85: that at C, Fig. 4 changed to that at C, Fig. 3.
Page 172: their divine original changed to their divine origin.
Page 216: the sphinx atropos squeaks changed to The sphinx atropos squeaks.
Page 361: friends, says the author, who are ... changed to friends,” says the author, “who are ....
Page 387: motion of the fluids are changed to motion of the fluids is.
Page 446: E. eliptica changed to E. elliptica.
Page 476: accuminatus changed to acuminatus.
Page 525: 340. changed to 240.
Page 560: Plate XXII. Fig. 66 changed to Plate XXVII. Fig. 66.
Page 703: page 187, note 623 changed to page 187 note, 623.
Page 704: muscle changed to mussel (Cancer pisum).
Index: the spelling of some entries has been standardised with that used in the body text.