// is with great hesitation and many misgivings that we submit this Report 

 to be printed, being conscious of the fact that errors may have crept into it un- 

 known to us. But, at the oft-repeated request of Dr. Guyot, and the hope that 

 the observations of scientific interest carried on during the Summer of 1877 may 

 be of some value, we have sent it out, knowing that it embodies the results of 

 careful work. That it was done by amateurs who entered into the work from 

 love of it, and who had not the experience of professional men, must be 

 the excuse for any deficiencies which may be fozmd in it. It is with much 

 pleasure, however, that we take this opportunity of thanking Dr. Guyot and 

 Professors Brackett and MacMillan for their kind encouragement and aid, both 

 in the preparation they gave us for work in the field and in the unfolding of the 

 results, after our return home. A number of artotypes enliven the pages of the 

 Report, for the plates of which we are indebted to the courtesy of the photog- 

 raphers of the expedition, Mr. Devereux and Mr. Butler. 



WILLIAM LIB BEY, JR. 



w. w. MCDONALD. 



199567 



