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. 1847 May;1(11):867–872.

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This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License, which permits non-commercial use and redistribution provided that the original author and source are credited.

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PMCID: PMC5822236

Full text

867
868
869
870
870-1
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872
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867

868

869

870

870-1

870-2

871

872

FIG. 1
on p.870-1

FIG. 2
on p.870-1

FIG. 1
on p.870-2

FIG. 2
on p.870-2

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