Part 5

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Transcriber's Note:

Minor errors in punctuation have been corrected without note. The following typographical errors in the original have been corrected:

P. 110: 'a panopoly of gadgetry': corrected to panoply P. 113, caption to Figure 13: 'Feuss': corrected to Fuess Footnote 28: 'Gewerbeaustellung': corrected to Gewerbeausstellung Footnote 28: 'Physikalisches Worterbuch': corrected to Wörterbuch Footnote 29: 'see also Gerland and Traümuller': corrected to Traumüller