of geometry written in French by F. Ignat. 
  Pardies and rendered into English by John Harris D. D. London,
  printed for R. Knaplock at the Bifhop’s Head, MDCCXI, with dedicatory
  epiftle to his worthy friend Charles Cox, efquire, Member of
  Parliament for the burgh of Southwark and having ink calligraphed
  statement on the flyleaf certifying that the book was the property of
  Michael Gallagher, dated this 10th day of May 1822 and requefting the
  perfon who should find it, if the book should be loft or go aftray,
  to reftore it to Michael Gallagher, carpenter, Dufery Gate,
  Ennifcorthy, county Wicklow, the fineft place in the world.

What reflections occupied his mind during the process of reversion of the inverted volumes?

The necessity of order, a place for everything and everything in its place:  the deficient appreciation of literature possessed by females:  the incongruity of an apple incuneated in a tumbler and of an umbrella inclined in a closestool:  the insecurity of hiding any secret document behind, beneath or between the pages of a book.

Which volume was the largest in bulk?

Hozier’s history of the Russo-Turkish war.

What among other data did the second volume of the work in question contain?

The name of a decisive battle (forgotten), frequently remembered by a decisive officer, major Brian Cooper Tweedy (remembered).

Why, firstly and secondly, did he not consult the work in question?

Firstly, in order to exercise mnemotechnic:  secondly, because after an interval of amnesia, when, seated at the central table, about to consult the work in question, he remembered by mnemotechnic the name of the military engagement, Plevna.

What caused him consolation in his sitting posture?

The candour, nudity, pose, tranquility, youth, grace, sex, counsel of a statue erect in the centre of the table, an image of Narcissus purchased by auction from P. A. Wren, 9 Bachelor’s Walk.

What caused him irritation in his sitting posture?  Inhibitory pressure of collar (size 17) and waistcoat (5 buttons), two articles of clothing superfluous in the costume of mature males and inelastic to alterations of mass by expansion.

How was the irritation allayed?

He removed his collar, with contained black necktie and collapsible stud, from his neck to a position on the left of the table.  He unbuttoned successively in reversed direction waistcoat, trousers, shirt and vest along the medial line of irregular incrispated black hairs extending in triangular convergence from the pelvic basin over the circumference of the abdomen and umbilicular fossicle along the medial line of nodes to the intersection of the sixth pectoral vertebrae, thence produced both ways at right angles and terminating in circles described about two equidistant points, right and left, on the summits of the mammary prominences.  He unbraced successively each of six minus one braced trouser buttons, arranged in pairs, of which one incomplete.