62 



ance with Sir J. D. Hooker dates from this time. He worked 

 incessantly wherever he went and returned to America well 

 stored with information for the continuance of the Flora.* Vol. 

 I, Pts. 3 and 4 of the Flora were pubhshed in June, 1840, com- 

 pleting the' volume of 711 pages. Vol. IF, Part i, appeared in 

 May, 1841,- Pt. 2 in April, 1842, while Pt. 3, completing the volume 

 of 504 pages, was not pubhshed till February, 1843, ^^er Dr. Gray 

 had gone to Cambridge. Here the work was stopped, till it was 



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resumed long after, single-handed, by Dr. Gray. The pressing 

 professional duties of the two associates, besides the constant 

 work required In elaborating and publishing the large collections 

 that were constantly being brought in from different parts of our 

 country, necessitated the suspension of the work, at least for the 

 time. 



In 1842, while visiting Mr. Benj. D. Greene in Boston, he 

 accepted an invitation from President Quincy, Mr. Greene s 

 father-in-law, to take the chair of Fisher Professor of Natural 

 History In Harvard University, a position which he occupied till 

 his death. Under him have grown up the vast herbarium and 

 botanical library and garden, which, at the time of his going to 

 Cambridge, were still in their infancy. At that time there was a 

 single greenhouse, no herbarium, and but few botanical works. 

 For eight years there had been no head at the Botanic Garden, 

 since Thomas Nuttall resigned his position as curator, in 1834, 

 to which he had been appointed in 1822, on the death of William 

 D. Peck, the earliest and only professor before Dr. Gray. The 

 Cambridge Botanic Garden was established in 1805, and Prof. 

 Peck was appointed to direct it, as well as to give botanical 

 lectures in the University. Through lack of funds, however, but 

 little material of value for research was collected till Dr. Gray's 

 accession. 



Mr. Peck built the house in Garden Street which has been 

 the home of Dr. Gray for so many years and from which have 

 come so many valuable works. The large and comfortable study, 

 added in 1848, faces the south and east and looks out upon the 

 garden, blooming with plants all through the growing season, 



^ "--■- I ^ TM IHll u , _ ,_, -r-- ■ ■ -----^ ■ ^^"^^^ 



*A detailed account of this trip is given by Prof, C. S. Sargent, in the New York 

 Sun for January 36, 1886. 



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