84 
general surface. On March 13th, 1872, in company with 
Mr. JohnBirkbeck and Mr. Walker, I was enabled by the 
kindness of Mr. Farrer to take a set of measurements, to be 
recorded for use in after years. 
For the sake of insuring accuracy in future observations, 
three holes were bored at the base of the stalagmite, and 
three gauges of brass wire, gilt, inserted, gauge No. 1 in the 
following table being that on the S.S.E., No. 2 on N.N.E., 
No. 3 on the W. side. The curvilinear dimensions were 
taken with fine iron wire, or with a steel measure ; and the 
circumferential around the base along a line marked by the 
three gauges. The measurements 2, 3, and 4 of the table 
ware taken on the 15th of March, by Mr. Walker, and their 
accuracy may be tested by the fact that they coincide 
exactly with No. 1, which I took two days before. 
The lengths of wire, properly labelled, will be deposited 
in the Manchester Museum, The Owens College, for future 
observers. 
In the following table I have given my own measure- 
ments and compared them with those taken by Mr. Farrer. 
TABLE OF MEASUREMENTS. 
13th Mar. 
1873. 
Inches. 
1839. 
Inches 
30th Oct. 
1845. 
Inches. 
Inci 
sir 
1839 
ease 
ice 
1845 
Rate of increase 
per annum. 
Inches. 
1 Basal circumference at Gauges . . 
128 
118 
120 
10 
8 
•2941— -2857 
2 Guage No. 1 to Gauge No. 2 — 
52-625 
3 , j 2 ,, 3 . . . . 
35-0 
4 „ 3 „ 1.... 
40-375 
5 Gauge No. 1 to hole in centre of 
basin at apex 
30 
6 ,, 2 ,, „ .... 
29-5 
7 5> 3 ,, ,, . . . . 
31-4 
8 Hgt. from Gauge No. 1 
20-9 
9 ,, ,, 2 minimum 
20-4 
10 Maximum 
29-7 
11 Tape measurement on slope 
gauge No. 1 to edge of apex.. 
26-7 
12 „ No. 2 „ ,, 
26-6 
21-0 
5-6 
13 „ ,, Maximum ,, 
36-0 
32-0 
35-0 
4-0 
1-0 
14 Roof to apex of Jockey cap 
87 
95-25 
8-25 
•2946 
15 Roof to tip of stalactite 
10 
16 Stalactite to apex of Jockey cap. 
85-25 
Unfortunately I have been unable to identify the exact 
spots where the stalagamite was measured by Mr. Farrer, 
