NOTES AND EXHIBITS. 417 



off when tiie snails are killed. And a sample of a pigment used 

 by the young people for painting their faces, when looking for a 

 lover. 



Mr. Cotton showed a sample of diamonds and diamond-associates 

 from Copeton, about 15 miles south of Inverell, N.S.W. The 

 former comprised twelve diamonds, total weight 4 carats, two 

 being well developed octahedra, ten colourless and of first water, 

 one straw-coloured, and one wine-coloured. The latter repre- 

 sented a concentrate of the diamond-bearing gravel, the minerals 

 present being tourmaline, garnet, topaz, and quartz. 



Mr. T. H. Johnston, of the Bureau of Microbiology, exhibited 

 a series of potatoes showing various diseased conditions, viz., 



(1) Irish Blight, due to the iungus Fhytophihor a infestans, micro- 

 scopic slides of which were shown; some of the tubers were from 

 Tasmania, whilst others were from the Richmond River, N.S.W. 



(2) Dry Rot, due to the fungus Fusariitm solani (New iSouth 

 Wales and Tasmania). (3) Wet Rot, due to Bacillus solana- 

 cear?«/i(New South Wales). (4) Scab, due to the fungus Oospora 

 scabies (New South Wales, Tasmania). Also Galls, due to the 

 presence of nematode worms, Tylenchus devastatrix (New South 

 Wales, Tasmania). He also exhibited a series of Entozoa, mainlj- 

 from rats and mice, most of which, unless otherwise stated, had 

 not been previously recorded as occurring in Australia, including: 

 Heterakis spumosa and Oxyuris obvelata, both from the caecum 

 and rectum of Mus decumanus, M. rattus, M. alexandrinus, M. 

 musculus; and I'richodes crassicauda, from the bladder of lUns 

 decu7nanus : none of these three parasites had been previously 

 recorded from any host in Australia. Apparently Heterakis 

 spumosa had not been mentioned before as occurring in mice. 

 Moniezia triyonophora, from the intestine of sheep and cattle, 

 also now recorded for the first time as an Australian parasite; 

 Thysanosoma Giardi {^Tcenia ovilla), collected and recorded by 

 Dr. Cleland, from the intestine of West Australian lambs; Cys- 

 ticercus fasciolaris from the liver of tlie four species of Mus 

 mentioned above (New South Wales), Mus alexandrinus (West 

 Australia, and Mus rrt^^?ts('?)(Samoa); and Tcenia crassicollis,(the 



43 



