proto-types are discussed here. It should be noted that ideally <strong>the</strong>se examples would be illustrated with annotated photography, preferably stereoscopic pairs <strong>of</strong> pictures. THE SELECTIVE KEY (KEY l) <strong>The</strong> :first device is a Selective Key, and its operation is illustrated by reference to a particularly choice area in vViltshire county, England. (Figure 1.) Five categories have been set up according to basically geometric criteria to assist in <strong>the</strong> simple, initial identi:fication <strong>of</strong> historic objects on aerial photographs. <strong>The</strong> geometric properties were choosen because pattern, outline, inter-relationships in space, and spatial overlaps are all readily spotted on aerial photographs even at very small scales. In <strong>the</strong> key itself <strong>the</strong> categories are listed in order <strong>of</strong> <strong>the</strong>ir seeming prominence on a photograph. <strong>The</strong> assemblage <strong>of</strong> features included withm each category is enumerated, and illustrative examples are included from Figure 1 in lieu <strong>of</strong> photographs. Aerial features which constitute <strong>the</strong> "grain" or overall pattern <strong>of</strong> a land surface will consist here <strong>of</strong> historical man-made aspects <strong>of</strong> agricultural, forestry, arti:ficial water body, and expansive settlement elements. In <strong>the</strong> territory illustrated here, such features will consist <strong>of</strong> so-called "Celtic Fields" and lynchets. With respect to <strong>the</strong>se two groups <strong>of</strong> things it should be noted that both <strong>the</strong> time <strong>of</strong> day <strong>of</strong> <strong>the</strong> photography and <strong>the</strong> season <strong>of</strong> <strong>the</strong> year will be essential parameters for successful interpretation. KEY 1: , A SELECTIVE KEY FOR THE HISTORICAL INTER PRETATION OF AERIAL PHOTOGRAPHERS Category Assemblage <strong>of</strong> FeatHres and IllHstrations 1. AREAL FEATURES- "Grain" or pattern <strong>of</strong> <strong>the</strong> land surface, consisting here mostly <strong>of</strong> agricultural features. e.g., Celtic Fields, Lynchets. 2. LINEAR FEATURES- Travelling earthworks, boundaries, alignments, and transportation lines. e.g., Roman Road, Wansdyke, <strong>the</strong> Old Bath Road, <strong>the</strong> Kennet and Avon Canal. 3. FOCAL FEATURES- Ritual centers, settlements, habitation complexes, and communications junctions. e.g., <strong>the</strong> Avebury Complex, Windmill Hill. 4. POINT FEATURES- A great range <strong>of</strong> possibilities, inCluding monuments, small enclosures, and isolated buildings. e.g., Silbury Hill, Knap Hill Fort. 5. COMPLEX FEATURES- Overlaps in position or 'in usage characterize <strong>the</strong>se, and usually reflect origins at different times. Includes overlapping land uses, and military or political frontiers. e.g., overlap (a) between Roman Road and Ridgeway, and (b) Roman Road and vVansdyke; <strong>the</strong> Avebury Circle, occupied since Bronze Age. 39
Avebun; � Norlharn Wiltshire, � W/Nt:>MILL. HILL. {;..,. � �· t___En9/and.� I ·. CEL TIC FiEL DS \,[;?.- ��· . D. • I�,#AV£.BUJ(Y q� �- / . -�, -�, · c �- � ,.,.. -- ..._ SILBUR.Y' .... . _ _ ..., _ _ '��� ,, ;,.._ � • � . � . -- )� � : 0' "'' t LYNCHErS -�/ � � EA !fTHWOF(KS """'"' � HILL FOR.T . 0 � �HILL ·�, • -� ' • • _.. \ ,. ,... ,.. p.N R.oAD ,.- f(OMAN BUll. DING J:. k I � ,. LONG BAR.RO w .- \ F(OUND BA.'(.qD W ! • < HiLL F/ 6UR_E I .... JDi � � � """' 0 � '· ! � I � I ) x,M _. -· . r- • p..O -; .1?_ f'l-0..- ,. . -rf-1 .-: �P. .... ,. '""' o .-- � .,� -- � o}:-' I r. -- . . � \ -- . f �' � ?'? � . ,.,.. -y/ ' 1 � �� �� 0 QKNAP HIL L .5 � .... ·. I!' 0 1 z mile s 0 f 2 J flm. �� ��� rmn '67 Figure 1
- Page 1 and 2: The California ""- Geographer ' Ann
- Page 4 and 5: A Modified Koppen Classification of
- Page 6 and 7: This is not to say that the Koppen
- Page 8 and 9: Mean Monthly and Seasonal Precipita
- Page 10 and 11: It was also discovered that the bou
- Page 12 and 13: Mean Monthly Temperatures (in F. o)
- Page 14 and 15: Except for the various changes ment
- Page 16 and 17: BIBLIOGRAPHY Ackerman, E.A., "The K
- Page 18 and 19: PLANNING GEOGRAPHY IN THE CURRICULU
- Page 20 and 21: angements of features which when in
- Page 22: propriate name for these "fortran f
- Page 25 and 26: The most numerous concerns are thos
- Page 27 and 28: island of Makatea, long had the mon
- Page 29 and 30: Cocorape in Paea, 19 kilometers sou
- Page 31 and 32: vanilla and coconUt products accoun
- Page 34 and 35: COASTAL GEOGRAPHICAL FEATURES OF LA
- Page 36 and 37: Although common salt is among the l
- Page 38 and 39: Rainfall is slight. In 1938 and aga
- Page 40 and 41: A 50-mile road net surrounding the
- Page 42 and 43: TWO KEYS FOR THE HISTORICAL INTERPR
- Page 46 and 47: Although not nearly as extensive in
- Page 48 and 49: KEY 2: A DICHOTOMOUS ELIMINATION KE
- Page 50 and 51: not bflen practiced. The ard, suppo
- Page 52 and 53: THE l\IIEXICALI VALLEY \VATER PROBL
- Page 54 and 55: a part ot 1Vlex1co s LJowrado water
- Page 56: and v�rious combinations of these
- Page 59 and 60: in Spain" or the image of the Ameri
- Page 61 and 62: Baldridge, Kenneth, A History of th
- Page 63 and 64: Bryant, Edwin, What I Saw in Califo
- Page 65 and 66: Coy, Owen C., In the Diggings in 'F
- Page 67 and 68: Dyke, Dorothy, Transportation in th
- Page 69 and 70: Goodwin, Cardinal L., The Establish
- Page 71 and 72: Hellman, Margery S., "Port Costa, C
- Page 73 and 74: Johnson, William G., Overland to Ca
- Page 75 and 76: Lewis, Ruth R., "Kaweah : An Experi
- Page 77 and 78: 1846-1875, unpublished master's the
- Page 79 and 80: Potter, David M. (editor), Tmil to
- Page 81 and 82: Ryan, William Redmond, Personal Adv
- Page 83 and 84: Thompson, John, "The Settlement Geo
- Page 85 and 86: Wheeler, May, John A. Sutter, A Cal
- Page 87: ExEcuTIVE BoARD Officers and Member