4 PROCEKDINGS OF THE MALACOLOGICAL SOCIETY. 



reprinted by Mr. Newton, " Syst. List of the F. E. Edwards Coll. of Brit. 

 Olig. and Eocene Moll.," p. 320, though their source is not mentioned), 

 attribute 12 instead of 11 parts to the work, and are wrong in other 

 minor particulars. Through the kindness, however, of Messrs. Dulau & Co., 

 communication was ojiened with the original publishers of the work, and 

 the following authoritative details have been obtained which set the 

 matter at rest : — • 



Lief. 1-3 : pp. l-9f;, pis. i-xii, IsTC 



„ 4^5 : PI). 97-l()(), pis. xiii-xx, 1871. 



„ C-8 : pp. 161-256, pis. xxi-xxxii, 1872. 



„ 9-10 : pp. 257-352, pis. xxxiii-xxxvi, 1873. 



„ 11 : pp. i-viii, 353-1000, 1875. 



B. B. Woodward. 



Cement as a SLU(i-KiLLER ! {Read 8th December, 1905.) — The 

 accompanying photograph shows the fate that overtakes the unwary slug 

 that essavs a journey over a surface of dry cement. The porous material 

 simply sucks all the moisture out of its body, and unless the animal can 

 effect a good retreat it speedily succumbs. The tragedy here shown took 

 place in the early morning of 13th September last at the back of my 

 house in Ealing, and was kindly jihotographed for me by my neighbour, 

 Mr. C. C. Roberts. The copious exudation of glistening mucous is clearly 



shown, as well as the frantic efforts of the unfortunate mollusc to escape 

 from the sucking action of the cement, by rearing and flinging itself to 

 one side or the other, instead of steadily progressing over the surface. 

 The dead slug is seen at the end of the trail of slime, which was so 

 tenaciously retained by the cement that it was still visible in November. 



B. B. Woodward. 



