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Notes
Cf. Allan Stevenson, "Chain-Indentations in Paper as Evidence," Studies in Bibliography, VI (1953), 181-195.
Cf. Edwin Wolf 2nd, "Press Corrections in Sixteenth- and Seventeenth-Century Quartos," Papers of the Bibliographical Society of America, XXXVI (1942), 187-198; Francis R. Johnson, "Press Corrections and Presswork in the Elizabethan Printing Shop," ibid., XL (1946), 276-286; K. Povey, "Variant Formes in Elizabethan Printing," The Library, 5th series, X (1955), 41-48.
K. Povey, "On the Diagnosis of Half-sheet Impositions," The Library, 5th series, XI (1956), 268-272. Some examples of the method, as a corrective of deductions from press-figures and headlines, will be found in my article "A Century of Press-figures," awaiting publication in The Library.
After some experience in utilizing the Martin Lamp, the Editor recommends the assistance of a strong magnifying glass to view the page. Moreover, considerable care is necessary to make sure that inked hillocks are not mere paper irregularities instead of the crucial embossing from the types. For example, it may be that a more powerful light source would materially increase the ease of distinguishing the ink on the rounded tip of a hillock from the contrary examples where the type of the perfecting forme has indented the top of the embossed hillock made by the white-paper forme. Fortunately, an English optical manufacturer has interested himself in the problem, and as this volume goes to press is in process of perfecting a lamp powerful enough to use in daylight and materially more efficient than the home-made model. F.B.
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