190 THE ENTOMOLOGIST. 



I accomplished, with only slight damage to the nest, by means of 

 a large cyanide bottle. — R. S. Standen; Alby Hill House, Norfolk. 



The late Mr. Blackwall. — A few years ago I received a 

 letter from this veteran of science, in which he told me of the 

 place and date of his birth. As these differ from those supplied 

 in your interesting obituary notice, it may be well to put them on 

 record. He said that his birth took place at his father's house in 

 St. Ann's Square, Manchester, on January 20th, 1790. His 

 father, Thomas Blackwall, was a draper, and afterwards an 

 importer of Irish linen. He lived, as was the custom of the 

 period, at his place of business ; and it was not, I believe, until 

 later that he went to reside at Crumpsall Old Hall. John 

 Blackwall was for some years in jDartnership Avith his father ; but 

 in 1833 he retired from commercial pursuits, and fixed his abode 

 in the vale of Conway. It ma}' be useful to some of your readers 

 to point out that the ' Catalogue of Scientific Papers,' published 

 by the Boyal Society, contains a list of sixty-four papers, written 

 by the deceased gentleman. — Charles W. Sutton; Manchester 

 Public Free Libraries, Manchester, July, 1881. 



[In the obituary notice of the late John Blackwall, F.L.S., at 

 p. 147, line 20 from top, for "1847" read "1874."— 0. P. C] 



Erratum. — Entom. p. 163, line 15, for "sunflies" read 

 " sawflies." 



KEVIEWS. 

 Second Report oj the United States Entomological Commission on 



the Rocky Mountain Locust. Washington : Government 



Printing Office. 1880. 

 This second report contains the result of the labours of 

 Messrs. Riley, Packard, and Thomas, with their assistants, during 

 the years 1878 and 1879. The first report (1877) treated largely 

 of the natural history of Caloptenus spretus and its allies, and was 

 practically exhaustive on the destruction of the young insects in 

 their trans-Mississippi breeding-grounds. This second report 

 directs attention to the prevention of injury from the disastrous 

 winged swarms arriving in the cultivated states from the north- 

 west. Mr. Thomas enters most fully into the facts concerning 

 the laws governing the migration of locusts in all countries, and 

 arrives at some very interesting conclusions, after thoroughly 

 examining, and giving a brief summary of, the extant literature 



