14 INTRODUCTION. 



joined the Sand Point party. On July 29, Baker, Leathers, Shull 

 and Gaige were sent to Rush Lake, where camp was made at the eastern 

 end of the lake. The writer joined this party on Augusi 1. On August 

 3, Coons left the party, and on August 8 Leathers was returned to Sand 

 Point. The remainder of the Rush Lake party, consisting of Gaige, 

 Shull, Baker and the writer, remained at Rush Lake until August 27. 

 On August 20, Dodge again joined the Sand Point party and moved to 

 Rush Lake on August 21, leaving the party again on August 25. From 

 the Rush Lake camp the entire region between Oak Point and Port 

 Crescent was examined. On August 28, the parties were again united 

 on Sand Point, and on the following day left the field. 



On June 15, 1909, Dodge returned to Caseville and spent two days 

 between that place and Sand Point, one day at Rush Lake, and one day 

 on the Charity Islands, and about five days at Bay Port and on the 

 adjoining islands. Again he went to Sebewaing and spent three days 

 in that vicinity, July 10, to Port Austin for three days, August 7, and 

 to Grindstone City for three days, September 14, 1909. 



From this itinerary it will be seen that the expedition worked in 

 detail a strip of coast extending from Sand Point to Port Crescent, 

 with the islands immediately off shore, and the botany of the entire 

 sand region and the Charity Islands. In this work Shull devoted his 

 entire time to insects, laying particular stress upon the Orthoptera 

 and Thysanoptera; Baker confined his attention entirely to the molluscs; 

 Leathers investigated the fish fauna; Wood and Gaige worked on the 

 birds and mammals; Dodge and Coons studied the botany; and the 

 writer had general charge of the expedition, and devoted his time in 

 the field to the investigation of the reptile-amphibian fauna. 



That the results of the expedition exceeded what the writer hoped 

 it could accomplish is due in large part to the excellent work done by 

 its members. Both in the field and subsequently in working over the 

 collections, the men have been untiring in their efforts to make the most 

 of the opportunity that the survey provided of obtaining a detailed 

 knowledge of the biota of the region. In work of this kind the actual 

 number of specimens obtained means little as a measure of the results 

 obtained, but the following resume of the collections will give some 

 idea of the amount of data secured: 



Insects— 15,000. 



Molluscs— 15,000. 



Crawfish — 84. 



Fish— 1,647. - 



Amphibians and Reptiles — 352. 



Birds — 641 skins, 68 nests and eggs, 631 stomachs. 



Mammals— 69. 



