NOTES AND QUERIES. 467 



Soc, and myself obtained an immature specimen of this " air" bug. 

 A specimen was captured at the same place in 1901, and it was then 

 regarded as a visitor, all the localities previously given, I believe, being 

 south of London ; but this second authentic occurrence goes to prove 

 that it was not a "visitor," but a "native." — W. Percival Westell 

 (5, Glenferrie Road, St. Albans, Herts). 



APPLIED ZOOLOGY. 



I have received a letter from Dr. E. F. Bashford, Superintendent of 

 the Cancer Research under the direction of the Royal Colleges of 

 Physicians and of Surgeons. He tells me it would very materially 

 assist the work of the Cancer Commission if they would collect material 

 of the nature' of malignant or pathological growths from the lower 

 Vertebrates, and, if it exists, from Invertebrates. Cysts or tumours 

 caused by Nematodes, Trematodes, or Cestodes are not required, but 

 any tumour of unknown origin, if sent to London, would be carefully 

 investigated at the Cancer Research Laboratory, and might prove of 

 real value in the enquiry. Such specimens, whether already preserved 

 or fresh, should be placed in weak formalin, and forwarded by post to 

 the "Director, Cancer Research Fund, Examination Hall, Victoria 

 Embankment, London, W.C." Pathological material of this kind is 

 of special importance if found in Amphibia, or in Fishes, or in Inverte- 

 brates, or in embryos generally. I understand that the Cancer Com- 

 mission in Berlin have already received much useful material from the 

 various Zoological Laboratories in Germany, and it would greatly 

 assist the work of the Cancer Research Fund in this country if similar 

 supplies could reach them from our British institutions. — A. E. Shipley 

 (The Museums, Cambridge). 



