69 



guished lawyers of the Boston bar. She was a most devoted 

 companion and assistant in all his labors, and accompanied him 

 on most of his journeys. After assuming the Professorship at 

 Cambridge, he made five trips to Europe, the first time being in 

 June, 1850, when he and Mrs. Gray went to England by a sail- 

 ing vessel, the principal reason for the trip being to work up the 

 plants of the Wilkes expedition. They travelled in Switzerland, 

 and at Geneva Dr. Gray worked for a while in De Candolle's 

 herbarium. From there they went to Munich and saw Von 

 Martius, the distinguished naturalist and traveller, whose work on 

 the palms is one of the most valuable contributions to science. 

 This was the renewal of a warm friendship formed in 1839. They 

 returned by Holland to England and, early in October of the 

 same year, went into Herefordshire to the country place of 

 George Bentham, where they spent two months, Mr. Bentham 

 going over, with Dr. Gray, the collection which he had taken 

 out with him from America on this visit. At Christmas time 

 they went to Kew, where Dr. Gray worked in Sir William 

 Hooker's herbarium, which was then in his own house ; and also 

 in the British Museum, Robert Brown being at the time there. 

 Dr. Gray says of this distinguished man, that he, ''Next to Jus- 



sieu, did more than any other botanist for the proper establishment 

 and correct characterization of natural orders." From Kew they 

 proceeded to Paris, where for six weeks Dr. Gray worked at the 

 Jardin des Plantes and in P. Barker Webb's herbarium, and then, 

 returning to England, they sailed for America by steamer in 

 August, 185 I. 



The second trip to Europe was a short one, occupying from 

 August to September, 1855, when Dr. Gray went to Paris to bring 

 home his brother-in-law, who had been ill there with typhoid 

 fever. He saw, however, some of his old friends. In Septem- 

 ber, 1868, Dr. Gray again sailed for Europe with his wife, and 

 spent the autumns of 1868 and 1869 at Kew, hard at work. He 

 also worked in Paris, Munich and Geneva, and visited herbaria 

 over a large part of the continent. On this trip, however, he 

 took more holidays than in any journey except the last. In 

 December, 1868, they went up the Nile In Egypt, and returned 

 to Cairo in March, nassine^ twelve weeks in a *'dahabeeah '* with 



