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Go to B.J.S. Cahill Online Resource.
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| Go to complete linklist of Cahill-Keyes
map development |
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Cahill 1909
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Cahill-Keyes 1975 |
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Note: being averse to small print, I composed
this in an 8" frame with ca. 12 pt. serif type. If you are like me, you may
wish to enlarge your screen view to show a similar frame and font size, in case there is a puny default.
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B.J.S.
Cahill Butterfly Map
Online Resource: Octahedral Map of the World Compiled by Gene Keyes 21st Edition 2015-04-14, revised and updated; more to come
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Contents
These hotlinks scroll down to a subsection, whose links open each listing on a separate page 1) B.J.S. Cahill himself 1.0) Photos 1.1) Publications 1.2) Unpublished (but online) material 1.3) Cahill octahedral world map images 1.4) Articles about Cahill octahedral map 1.5) Cahill archive listings 1.6) Other references (tba): not, or not yet, online 2) Post-Cahill 2.1) Buckminster Fuller (Dymaxion Map, 1943, 1954; non-Cahill) 2.2) Gene Keyes (Cahill-Keyes Multi-scale Megamap, 1975 ff) 2.3) Steve Waterman (Waterman Butterfly Map, 1996 ff) |
| 1) B.J.S. Cahill
himself 1.0) Photos To triple this image size, click once. To restore smaller size, click twice. Note: in triple size, you can see the mapwork on the polygon; and at the far right, a corner of his Gnomonic variant. 
B.J.S. Cahill (1866-1944): Architect and Cartographer Source: Scanned by Gene Keyes in 2012
from undated duplicate of
photo (ca. 1936?) at Bancroft Library, University of California at Berkeley, Bernard Joseph Stanislaus Cahill Papers, (83/39)  B.J.S. Cahill, ca. 1940
Source: pdf from Cahill
grandchildren; converted to jpeg by GK.
Photos reproduced with permission
from the descendants of B.J.S. Cahill:
Laura Cahill Huber, Susan Cahill Aylward, and Stanley James Cahill. |
| 1.1) Online papers and
publications by B.J.S. Cahill: Annotated link-list [still in progress]
1909-02 / 1909-09 Cahill, B.J.S., "An Account of a New Land Map of the
World" (The Scottish Geographical Magazine,
1909-09) p. 449-469.
The first publication
and exposition of the Butterfly Map. Strong critique
of Mercator for classrooms.
1912-03-05 / 1913-02-25
Cahill, B.J.S., "Map of the World", U.S. Patent
1,054,2761913 (Washington,
DC: United States Patent Office, 1913-02-25; filed
1912-03-05.) 3 p.
Cahill's
patent of the Butterfly Map itself. Online here as
jpegs, pdf, or HTML.
1912-10 /
1913-10
Cahill, B.J.S., "A
Land Map of the World on a New Projection"
(Journal of the Association of
Engineering Societies, 1913-10;
orig. 1912-10) p. 153-207Cahill's
longest and most thoroughgoing published exegisis
of his Butterfly Map; also includes 50
illustrations, 20 of which are a comparison of
various map projections to the same scale using
the same size globe-circle for each. Over three
decades before Buckminster Fuller’s 1943 Dymaxion
map, Cahill had already created a far more elegant
octahedral world map, and shown how it is designed
for thinking “planetarily”. Article is
re-formatted in HTML with all the illustrations.
1913-02-11 / 1913-12-09
Cahill, B.J.S., "Geographic Globe" (Washington,
DC: United States Patent Office, 1913-12-09; filed
1913-02-11) 2 p. + extra photo.Cahill's
patent for a rubber-ball globe which can flatten
to a Butterfly Map, or return to ball shape.
Online here as jpegs, pdf, or HTML.
ca.1920
Cahill, B.J.S.,
The Butterfly Map: The Surface of
the World Shown on an Eight-Part Decentralized
Projection (n.d., ca. late
1919 or early 1920) 8 p. illus.Promotional
pamphlet (shown here in 8 jpegs), with
(a) descriptive material and pictures, front and
back pages;
(b) reprints of two of his illustrated articles, deprecating the Mercator map; (c) three pages of blurbs from prominent geographers, educators, and personages of the day (including two by John Paul Goode, who went on to perpetrate the Homolosine three years later). 1928-12-28 /
1929-04
Cahill, B.J.S., "Projections for World Maps"—and text continued in separate pdf, plus illustrations:— Cahill, B.J.S., "A New Map for Meteorologists: Equally Suitable for Small Areas, Continents, Hemispheres or the Entire World" – both from Monthly Weather Review, 57/4, 1929-04) p. 128-133; illus. Has Cahill's
only published [partial] world map with a
one-degree graticule, except on land areas; as
well, one of his only
published five-degree world maps, regrettably
discontinuous on two pages. See similar map in
[1934] below, octants
together, but in an awkward north-south spread,
which I also show enlarged;
and cf [1940] below, in Butterfly layout. Pdf's are re-posted on my page
via above links for convenience; source URLs were:
http://docs.lib.noaa.gov/rescue/mwr/057/mwr-057-04-0128.pdf
http://docs.lib.noaa.gov/rescue/mwr/057/mwr-057-04-0130.pdf 1934
Cahill, B.J.S., "A World Map to End World Maps"
(Geografiska Annaler,
1934) p. 97-108.Argues against
proliferation of arcane projections, and sets
forth three major Variants to improve upon his
original design: Conformal, Equal Area, and
Gnomonic, within his basic octahedral framework.
"When finally map and globe practically agree . . .
the need of further world mapping comes naturally to
an end."
1940-04-03; 1940-05-20
Cahill, B.J.S.,
"One Base Map in Place of Five"
(1940) Monthly Weather Review,
68/2, 1940-02 [1940-05-20], p.4; 1 illus.Again urges the
meteorological community to display data on a single
world map, his Conformal Variant. Unlike items 6 and
7 above, here the map is shown in its customary
Butterfly profile, Pacific aspect. This was Cahill's
final article; he died in 1944 after a long illness.
Pdf re-posted on my page via above link
for convenience; source URL washttp://docs.lib.noaa.gov/rescue/mwr/068/mwr-068-02-0041.pdf
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1.2)
Unpublished Material by B.J.S. Cahill: 1939; 2011-10-01
Cahill, B.J.S., "The Butterfly Map of the World Today"
(Typescript, [1939] edited and formatted in HTML and
with Foreword by Gene Keyes) 54 p.Unpublished and
unfinished book typescript: history, vicissitudes, and
prospects for Cahill's octahedral map system. Lightly
edited by gk for typos, etc.
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1.3) Cahill
octahedral world map images (scanned and
compiled by GK) • A Comparative Gallery of 25 Cahill (and later) octahedral maps [1st ed.] • Cahill's largest world map: an analysis with full size online images • B.J.S. Cahill's Butterfly World Map: Five Desk Versions (Updated with fifth map, 2015-03-31.) • Cahill's "Variants" clarified [tba] |
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1.4)
Articles about Cahill octahedral map [Both are
in same link, but reverse order.] 1913-07-26 Lauds Cahill map as
"the best attempt so far to map the globe on a plane."
1943-03-14
Kaempffert, Waldemar, "True World Maps: Cahill
Projections Drawn Like Patterns for the Globe"
(New York Times, 1943-03-14)An ineffectual
description, as if to counter Life Magazine's debut of
Buckminster Fuller's Dymaxion map two
weeks earlier (1943-03-01). Too little, too late.
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1.5) Cahill
archive listings • Three archives at University of California, Berkeley • Digitized listing of Cahill map collection at Bancroft Library, U.Cal. Berkeley |
| 2) Post-Cahill 2.1) Buckminster Fuller (Dymaxion Map, 1943, 1954: non-Cahill) Why Cahill?
What about Buckminster Fuller?
2009-06-15
Keyes, Gene, Evolution of the Dymaxion
Map: An Illustrated Tour and Critique
[on
17 interlinked Web pages].
Summary: I love Bucky, but Cahill's map is a lot
better. Here's how. Detailed discussion with profusely illustrated comparison of Fuller and Cahill maps. Includes first online image of Cahill's unpublished but significant 1936 5° Equal Area Variant "C" (fig. 9.2.1). |
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2.3)
Steve Waterman (Waterman Butterfly Map, 1996) Cahill-similar
mapwork of Steve Waterman
[GK] Review of Waterman World Map (2010) My
review is favorable toward this Cahill-like Butterfly
map, but demurs at its separate Antarctica cut-out, and
some erroneous Arctic coastlines. It also details points
of difference between his design and graticule, and
mine. [A newer and improved version of the Waterman has
since been issued, in 2012.]  |
