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Page 21.
Page 22.
Fig. 1. Summary map of central North America, showing length of Serra march compared to more familiar distances.
Page 23.
Fig. 2. Climatic maps of western North America, showing classification of Baja California climate by three of the better-knoewn systems. BWh, BWk, Eb'd all indicate "desert."
Page 23.
Fig. 3. Climatic charts for selected stations from Los Angeles southward.
Page 24.
Fig. 4. Rainfall profiles, seasonal distribution, and terrain profiles for Baja California.
Page 26.
Fig. 5. Aridity of the Sonoran Desert Region, as computed by DeMartonne's Formula. A small value of the aridity index indicates great aridity.
Page 27. Fig. 6.
Generalized east-west cross section of Baja California, summarizing major geologic, tectonic, and erosional components.
Page 27.
Fig. 7. Cross section showing characteristics of man and mule trails.
Page 29.
Fig. 8. Areneno foot trail at Pinacate, Sonora. So far as can be determined, this trail has never been travelled by a shod animal.
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Fig. 9. Characteristics of mule trails.
Page 32.
Fig. 10. General route of the Serra trail from Loreto to Santa Gertrudis.
Page 33.
Fig 11. Ancient trails northward from Santa Gertrudis to San Juan de Dios.
Page 35.
Fig. 12. Serra route from San Juan de Dios to San Diego.
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