8 



stance. Even if the tubercle be cut through, the cut surface thus 

 exposed undergoes no change in color, but remains of the same 

 uniform white, and this distinction remains even when the tuber- 

 cles have become very dark brown or have been thoroughly- 

 dried. The brown color is slightly soluble in water. 



Specimens of this material have been preserved at the New 

 York Botanical Garden. I have been hoping to have an oppor- 

 tunity to investigate further this color change in the mycelium of 

 P. Ravcnclii and determine if it was of the same character as the 

 blue color that appears in certain Boleti when injured and which 

 Schonbein has shown is due to the action of ozone.* Removal 

 of residence and failure to find such a remarkable growth of these 

 plants elsewhere has prevented my carrying the investigations 

 further. 



South WKSTKRN State Normal School, 

 California, Pa. 



JOSEPH HINSON MELLICHAMP 



IjY \Vn.LL\M M. Canuy 



Dr. Mellichamp — an excellent botanist of South Carolina — 

 died on James Island in that State on the second of October last. 



Joseph Hinson Mellichamp, the son of the Rev. Stiles and 

 Sarah Cromwell Mellichamp, was born in St. Lukes Parish, South 

 Carolina, on the 9th of May, 1829. His father was for many 

 years Preceptor of Beaufort College and afterwards was pastor 

 of St. James Church on James Island. Being a lover of out- 

 door life and of natural objects, he gave his son a taste for the 

 same and especially for botan\-, which continued throughout his 

 life. In 1S49 he graduated from South Carolina College and in 

 1852 from the Medical College at Charleston. He then spent 

 some time in tlurope, studying in the hospitals of Dublin and 

 Paris. On his return he established him.self as a physician at 

 Bluffton, South Carolina, and here he remained most of his 

 ife — the exceptions being the time when he was a surgeon in 



* Cf. I)c Hary, Comp. Morpli. an<l liiol. (.f ilu- I uml;!, 15. 



