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To P. B. Mason   24 March [1871]

Summary

Interested in occurrence of hair on backs of weakly children. Asks PBM if he would report particulars of any case he observes during next 6–12 months.

Author:  Charles Robert Darwin
Addressee:  Philip Brookes Mason
Date:  24 Mar [1871]
Classmark:  Cleveland Health Sciences Library (Robert M. Stecher collection)
Letter no:  DCP-LETT-7615

From P. B. Mason   29 March 1871

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Summary

More details on children with hairy backs;

reasons for greater mortality rate of male children.

Author:  Philip Brookes Mason
Addressee:  Charles Robert Darwin
Date:  29 Mar 1871
Classmark:  DAR 90: 72–3
Letter no:  DCP-LETT-7641

To P. B. Mason   31 March [1871]

Summary

Thanks him for information on children with hairy backs.

Discusses paper by J. M. Duncan on the relative weights of male and female infants.

Author:  Charles Robert Darwin
Addressee:  Philip Brookes Mason
Date:  31 Mar [1871]
Classmark:  American Philosophical Society (Mss.B.D25.391)
Letter no:  DCP-LETT-7647
Document type
letter (3)
Addressee
Correspondent
Date
1871 (3)
letter