Bob Holmström, Editor, 2934 NW 53rd Drive, Portland, OR 97210 Phone: 503-292-3685, <holmstro@europa.com>

Bill Givens, Sec. &: Publisher, 3850 Ashford Dr., Eugene, OR 97405 Phone (H): 541-465-9311 <Lbanks@ix.netcom.com>

Everett Jones, Treas., Phone: 440-729-4811

Ernie Martt, Founding Editor, Phone: 440-247-6712, Phone: 440-247-6712 <emartt@oh.verio.com>

Page Contents

2 - 7 Fact and Fancy by E. F. Wale

8 - 9 Silica Rod for a Seconds Pendulum by Roger Irving

10 - 15 The Notion of "Random Error" in Pendulum Clocks, Revisited by Alan W. Heldman

16 The Visual Display of Quantitative Information by Alan W. Heldman

17 - 19 What is the Best Way to Predict Future Performance of a Pendulum Clock by Alan W. Heldman

20 - 31 The Case for the Case - Part One by Alan W. Heldman

32 Clockquakes by Robert L. Bellville

33 Horological Science Archives by Gordon Uber and Fortunat Mueller-Maerki

34 Correction to Air Density Table by Dr. George Feinstein

34 Request for translation help by Bob Holmstrom

There are no Rock the Boat items in this issue. These are meant to be comments no longer than half a page on horological topics, including controversial ones, but not personal. This is a quick way to write a short article, convey an important idea or ask a question.

Request for articles: New material is always needed and appreciated. Are you or someone you know working on something that would interest our readership? Please contact me if you need help getting your ideas and work into print.

Bob Holmstrom

Above: Drawing from Apians cosmographicus Liber of 1533, showing how a nocturnal is used to tell the time at night from the Great Bear.

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