BULLETIN OF THE NATURAL HISTORY SOCIETY. 
*08 
from this statement that the height of 120 feet given by the 
Geological map was derived. 
On the same trip we also visited the Trout Brook fall a few 
miles to the south,' and about a mile up the stream of that name. 
It is a very fine double fall of two very symmetrical pitches, an 
upper of about thirty and a lower of about twenty feet, separated 
by a shelf and pool. 
While the Fall Brook Fall seems firmly established as the 
highest in all New Brunswick, I am told by Mr. J. W. Bailey 
that its pre-eminence is threatened by two very high falls which 
he has seen on the Merry Pitcher branch of the Big Salmon 
River in St. John County. It is to be hoped that Mr. Bailey will 
himself present to the Society a description of these little known 
falls. 
1 16 . — -A Test of the Accuracy of Aneroid Measurements 
in Interior New Brunswick. 
As the Bulletins of this Society bear witness, I have for 
several years past been making many aneroid measurements for 
elevations in the interior wilderness parts of New Brunswick. 
Naturally I have been watching with special interest for the first 
test of their accuracy by the standard method of spirit levelling. 
Such a test was made in connection with the exploratory surveys 
of the Transcontinental Railway, though I have only recently 
obtained the data, which are still unpublished. In 1905 a party 
under the charge of Gillmor Brown, C. E., ran a line of spirit 
levels from Gulquac Lake, which was assumed, from my aneroid 
measurements as recorded in White’s Altitudes of Canada,* as 
1330 feet, to Beaver Lake at the head of Burnt Hill Brook, f 
which they made 1371 feet. This latter lake, however, had been 
* The original data are in this Society’s Bulletin, No. XIX, 1901, 329. 
-j- This lake is shown on the map accompanying Note No. 113 in this Bulletin. 
On that map the line of exact levels from this lake to Gulquac Stream is taken 
from the map of this survey, a copy of which, because of excessive red tape, I had 
much trouble in procuring. 
