NATURAL HISTORY AND PHYSIOGRAPHY OF NEW BRUNSWICK. 1 09 
found by spirit level, by D. Maxwell, C. E., to be 1383 feet, thus 
making Gulquac Lake by spirit level 1342 feet. My aneroid 
measurement of 1330 feet was therefore only 12 feet in error, 
and that on the conservative side. I am quite prepared to admit 
that such surprising accuracy of aneroid measurements made 
so far from a base is in considerable measure a matter of coin- 
cidence, and that they will not all run so accurately. Neverthe- 
less, as my measurements in that region have all been made with 
the same instruments, methods, and precautions, I have confidence 
that, as a whole, they will be found not far from the truth. 
