Note 1 — THE BRITISH WOODLICE.

"The Non-Marine Molluscs of Essex," by Wilfred Mark Webb; Essex Naturalist, Vol. x. (1897), pp. 27-48 and 65-81.

[2] The numbers in brackets refer to papers mentioned in the Bibliography at the end.

[3] It should be pointed out that the methylated spirit now sold in the shops contains mineral naphtha and goes milky on the addition of water. Permission can be obtained from Somerset House to buy what is still called "ordinary methylated spirit," but at present five gallons has to be purchased at one time.