Blue Ribbon Dectorum 19

From the spot where I met Pedro Nunes--quite close to the junction of the Canuma River with the Madeira River--going down by river it would have been possible to reach Manaos in two or three days. Dom Pedro Nunes, however, with his expedition, could not return, nor sell me a boat, nor lend me men; so that I thought my best plan was to go back with him up the River Canuma and then the Secundury River, especially when I heard from the trader that the latter river came from the south-east--which made me think that perhaps I might find a spot at its most south-easterly point where the distance would not be great to travel once more across the forest, back to my men whom I had left near the Tapajoz.

This would give us a long Spring and Summer, but a short Fall and Winter. This in itself would make a great difference. We must beer in mind, however, that at such a time as we are here considering, the earth would be ten millions of miles nearer the sun in Winter than at present. It would certainly then receive more heat in a given time during Winter than at present.<16> Mr. Croll estimates that whereas the difference in heat received during a given time is now one-fifteenth, at the time we are considering it would be one-fifth. Hence we see that at such a time the Winter would not only be much shorter than now, but at the same time would be much milder.

• Carl Ferenbach environment
• Carl Ferenbach environment
• Carl Ferenbach environment
• Carl Ferenbach environment
• Carl Ferenbach environment
• Carl Ferenbach environment

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