1 66 Field Museum of Natural History — Reports, Vol. V. 



the Bridge grounds, and provided the services of one of his employees as 

 rodman. The Assistant Curator also spent two days in the northern 

 Illinois lake region making detailed studies of the floating bogs of these 

 lakes and their peat and marl deposits, in order to obtain data for 

 making a model of a glacial lake. Besides the study material brought in, 

 some additions to the permanent collections were thus procured. 



In October the Assistant Curator of Ichthyology and Herpetology, 

 accompanied by Taxidermist Pray, spent nearly two weeks in Wis- 

 consin collecting material for exhibition purposes, the work being carried 

 on along the Mississippi River, chiefly on Lake Pepin. 60 specimens for 

 mounting were obtained, representing twenty-seven of the important 

 food fishes of the Mississippi Valley. This material will cover the 

 larger part of at least one side of a panel case, and will serve as the 

 basis of three or four groups, for which the accessory material was also 

 gathered. The success of this expedition depended to a considerable 

 degree upon the cooperation of certain members of the Association of 

 Commercial Fishermen and Clammers. Upon the request of the 

 Association, the Museum sent as a loan a collection of twenty-two 

 moimted food fishes, with labels, to the annual meeting of this organiza- 

 tion held in La Crosse on November 30th. The fishes were also exhibited 

 in the High School of that city. On three different occasions the lagoon 

 in Jackson Park, adjacent to the Museum, was seined and nimierous 

 specimens were obtained, some of which have been mounted for exhibi- 

 tion. The Assistant Ctirator has collected a considerable number of 

 local fishes, amphibians, and reptiles in the vicinity of Chicago while 

 engaged in his work for the exhibition series. Frequent one-day trips 

 were made and one week in August was spent in the sand dunes of 

 Indiana collecting material for this Division. As soon as the stimmer 

 had advanced sufficiently to make collecting profitable, a number of 

 field trips were made for insect group material by the Assistant Curator 

 of Entomeology and his assistant. For this purpose Palos Park, Illinois, 

 was visited at intervals in order to obtain specimens, particularly 

 dragonfiies, and accessories for a group illustrating the insect life 

 of ponds. To represent the most conspicuous insects found in the 

 vicinity of small, running streams, the region between New Lenox and 

 Joliet was likewise visited at intervals. Toward the end of summer 

 several trips were made to Edgebrook and other nearby places for 

 material suitable for a group of tomato worm moths. Several days 

 were also spent at Miller, Indiana, in order to secure the insects and 

 accessories typical of sand areas, but, as the collecting season had already 

 well advanced, it was not possible to secure a series of some of the early 

 stages of the most characteristic forms. As a resiilt of these trips enough 



