84 



general surface. On March 13th, 1872, in company with 

 Mr. John Birkbeck 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 MEASUKEMENTS. 



Unfortunately I have been unable to identify the exact 

 spots where the stalagamite was measured by Mr. Farrer, 



