Note 30-* — INTRODUCTION.

“Almost all arts and sciences are more or less encumbered with vulgar errors and prejudices, which avarice and ignorance have unfortunately sufficient influence to preserve, by help (or hindrance) of mysterious, undefinable, and not seldom unintelligible, technical terms—Anglicè, nicknames—which, instead of enlightening the subject it is professedly pretended they were invented to illuminate, serve but to shroud it in almost impenetrable obscurity; and, in general, so extravagantly fond are the professors of an art of keeping up all the pomp, circumstance, and mystery of it, and of preserving the accumulated prejudices of ages past undiminished, that one might fairly suppose those who have had the courage and perseverance to overcome these obstacles, and penetrate the veil of science, were delighted with placing difficulties in the way of those who may attempt to follow them, on purpose to deter them from the pursuit, and that they cannot bear others should climb the hill of knowledge by a readier road than they themselves did: and such is l’esprit de corps, that as their predecessors supported themselves by serving it out gradatim et stillatim, and retailing with a sparing hand the information they so hardly obtained, they find it convenient to follow their example: and, willing to do as they have been done by, leave and bequeath the inheritance undiminished to those who may succeed them.”—See p. 10 of Dr. Kitchiner on Telescopes, 12mo. 1825, printed for Whittaker, Ave Maria Lane.