672 THE POPULAR SCIENCE MONTHLY. 



their knowledge and powers, conclude that there is no soul, ergo no 

 immortal life, may from their own point of view be quite right ; but 

 they are not on that account by any means to be accepted as represen- 

 tative men of science. The proper sentiment of the naturalist is this, 

 that so far from pretending to inspiration or infallibility, he humbly 

 recognizes the limitations inherent in his own intellectual powers, and 

 imposed upon him and his time ; while with all the faculties of his 

 mind and soul, and with faith, he labors unbiased and assuredly, aiming 

 at truth and confident of the usefulness of his life-work to his own or 

 to subsequent generations, who sooner or later will recognize every 

 true contribution to the stock of knowledge and to a purer and pro- 

 founder insight into the wonders of the creation. The true investigator 

 of nature should never divest himself of the idea that he is, as it were, 

 a son in his Father's house and a co-worker, in his own humble sphere, 

 with the great Ordainer of the universe." 



The universal appreciation of Ehrenberg and his achievements found 

 a spontaneous expression on the occasion of the celebration of the 

 fiftieth anniversary of his doctorate in medicine, on November 5, 1868, 

 when felicitations and honors poured in upon the veteran savant from 

 all countries. The United States were represented in official congratu- 

 lation by their Minister Plenipotentiary, Mr. George Bancroft, and in 

 addresses from the American Association for the Advancement of Sci- 

 ence, the American Medical Association, the American Pharmaceutical 

 Association, and also in a poem by Dr. O. W. Holmes. These tributes 

 were presented by Mr. Bancroft, who afterward had them all printed 

 in a pamphlet. 



Devoted and faithful to his life-work, he maintained his powers 

 and his activity to the end. As stirring and brilliant as the day of 

 his life had been, was its evening serene and hopeful ; gently and 

 without pain he passed away, on the 28th of June, 187C, in his eighty- 

 second year. 



His large and invaluable collections he bequeathed to the Muse- 

 ums of the University of Berlin. 



