353 Letters, Extracts, Notices, ^c. 



Proposed Memorial to the Brchms and Schlegel. — Dr. Koc- 

 pert^ of Alteiiburg, informs us that it is proposed to erect 

 in that city a memorial of Christian L, Brehm, Alfred Brehm, 

 and H. Schlegel, three well-known Ornithologists, who were 

 all natives of Saxe-Altenburg. In case any members of the 

 B. O. U. or other friends should wish to assist in this laudable 

 undertaking, we shall be much pleased to forward their 

 contributions. 



Obituary. — John Peter van Wickevoort-Crommelin, the 

 distinguished Ornithologist of Holland, who died suddenly at 

 Haarlem on the 19th October, 1891, was born in the same 

 city on the 9th January, 1830. In his youth he studied law, 

 and took his degree in that faculty at Ley den in 1852, after 

 which he devoted himself to zoological studies for another 

 year under Temminck at the same University. For many 

 years Heer van Wickevoort-Crommelin was director of the 

 Society of Sciences at Haarlem. He was always very short- 

 sighted, and his eyes grew gradually worse, so that not many 

 years after his marriage, which took place in 1854, he be- 

 came totally blind. Notwithstanding this great misfortune, 

 he continued to augment and perfect the beautiful collection 

 of native birds which he had previously commenced. In this 

 he w as materially assisted by a wonderful memory and by a 

 very accurate knowledge of avian structure. His memory 

 was so good that, in his collection of many hundreds of 

 stuffed birds, he could always find any individual specimen, 

 and could moreover, if required, give full particulars about 

 its external appearance and the date and place of its capture. 



The results of Heer van Wickevoort-Crommelin^s studies 

 on the birds of Holland were chiefly published in the ' Archives 

 Neerlandaises ' and in the ' Tijdschrift voor de Dierkunde.' 

 His unrivalled collection of the birds of Holland has been 

 bequeathed to the Leyden Museum. 



