“This material, after being carefully examined _in situ_ by candlelight, is taken to the door and re-examined by daylight, after which it is at once removed without the cavern. A box is appropriated to each yard exclusively, and in it are placed all the objects of interest which the prism yields. The boxes, each having a label containing the data necessary for defining the situation of its contents, are daily sent to the honorary secretary of the committee, by whom the specimens are at once cleaned and packed in fresh boxes. The labels are numbered and packed with the specimens to which they respectively belong, and a record of the day’s work is entered in a diary. “The same method is followed in the examination of the black mould, and also of the stalagmitic breccia, with the single exception that in these cases the parallels are not divided into levels and yards.” A careful record of the work, and minute sections should be taken daily on the spot. _The Stalagmitic Floor to be broken up._ In all cases the crystalline flooring of stalagmite and stalagmitic breccias which often occur, should be broken up, or, if necessary, blasted with gunpowder. The former very frequently conceals the pleistocene remains, and the latter, which is in Kent’s Hole many feet thick, often contains the traces of man and wild animals. Sometimes it is very difficult to distinguish the breccia from the rocky floor. Where the ossiferous deposit fills a vertical fissure it must be worked on the same plan as in ochre-mining, by sinking a shaft. To dig into it from below (where this is possible) is very dangerous, because of the large imbedded stones which fall sometimes without any warning. _The Preservation of Fossil Remains._ The fossil bones and teeth, which have very generally lost their gelatine and have a tendency to crumble and split to pieces in drying, should be gradually dried, and from time to time saturated with a weak hot solution of gelatine or glue. Silicate of soda, sometimes called “liquid glass,” or melted paraffin (not the oil), may also be used for the same purpose. If the bones are extremely soft, they may be rescued from destruction by letting them dry in the matrix, saturating them and the matrix with a solution of gelatine, and then clearing off the latter. In this manner I preserved the skull of the musk sheep which is now in the Museum of the Geological Survey in Jermyn Street, London. APPENDIX II.--P. 40. _Observations on the Rate at which Stalagmite is being accumulated in the Ingleborough Cave._ Proceed. Lit. and Phil. Soc. Manch. April 1873.