1870.] 



SENATE— No. 170. 



7 



tution how their money has been spent and what ends their 

 liberality has served. In thus extolling the institution I speak 

 also more for others than myself, for I have owed in great de- 

 gree to the corps of assistants working with me the possibility 

 of accomplishing my aims. The organization must of course 

 be the work of the Director ; but for the energetic and intelli- 

 gent carrying out of the scheme I have to thank the gentlemen 

 working with me either as assistants upon very moderate salaries 

 or as friends of the institution who give their work without any 

 remuneration whatever. Among the latter our thanks are es- 

 pecially due to Mr. Lyman, who takes upon himself the trouble- 

 some office of treasurer, and manages the funds of the Museum 

 in a way to make them available to the last dollar. 



The chief work done this year has been the mounting and 

 labelling of specimens for exhibition, in order that whenever the 

 new building should be ready we might open it to the public 

 without delay. The special reports appended below, will show 

 how much has been done in this way in each department. I 

 may state in general that in the entomological department, 

 under direction of Dr. Hagen, much progress has been made in 

 arranging the collections, both for exhibition and exchange, and 

 also for the benefit of special students. Besides the general 

 systematic collections, the biological, physiological and palseon- 

 tological collections are already well advanced, as well as one 

 showing the metamorphoses and different stages of growth of the 

 species. The palaeontological collection of Insects has been en- 

 riched by a valuable collection purchased from Dr. Kranz, in 

 Bonn, Prussia, to be paid out of the Gray fund, while we owe to 

 Professor Ratzeburg, in Berlin, a collection of insects destructive 

 to vegetation, and a valuable work on the same subject. The 

 entomological department of our library has been increased by 

 the library of the late Dr. Zimerman of South Carolina. In 

 connection with this subject I would draw attention to the ar- 

 rangement announced in Dr. Hagen's report for furnishing 

 students with cheap and excellent microscopes from Europe. 



By a reference to the report of Mr. Anthony, it will be seen, 

 that while the system of exchanges, in the department of 

 Conchology, has been kept up with regularity, so that we are 

 constantly in receipt of such specimens as are still wanting in 

 our large collection, the chief labor has been in mounting and 



