83 



Jensen (C. 0.). Bermorkninger om Hypodermalarvernes Forhold til 

 Rosenfeber. [Kemarks on the Connection between Hjjpoderma 

 Larvae and "Rose Fever."] — Macmedsskrift for Dyrlaeger, Copen- 

 hagen, xxxi, 1919-20, pp. 324-25. 



In view of the paper noticed above, the author gives some details of 

 experiments made by him 16 years ago. In slaughter-houses the 

 presence of larvae of Hypoderma is not uncommonly associated with 

 extensive oederaatous infiltrations in the submucosa of the oesophagus. 

 It was concluded that these infiltrations must be due to a toxic 

 substance derived from the larva, and as various circumstances showed 

 that an excretion from the larva could not be the cause, these symptoms 

 are presumably due to the presence of dead or injured larvae. For 

 this test two larvae in the first stage were taken from the gullet, and an 

 extract of them made in sterile salt solution and this fluid was then 

 injected under the skin of a calf. In from | to 2 hours the calf 

 exhibited symptoms of rose fever, with very marked oedematous 

 infiltrations in the eyelids, anal region, inguinal folds, dewlap and 

 elsewhere in the loose subcutaneous tissue, and these disappeared as in 

 rose fever in a few hours. The author is therefore of opinion that all 

 cases of rose fever are due to Hypoderma larvae and that the toxic 

 substance concerned has the effect of causing a marked increase in 

 the secretion of lymph. 



Henriksen (K. L.). Insekterne og Vore Sygdomme. [Insects and 

 Human Disease.] ^Martins Forlag, Copenhagen & Ckristiania, 

 1919, 226 pp., Price 2 Kr. [Received 13th April 1920.] 



This is a semipopular and general review of the role played by 

 insects in the conveyance of human disease, both in Northern Europe 

 and in the tropics. 



Hansen (F. P. G.). Om Sarcoptesskab hos Hesten. [On 



Sarcoptic Mange in the B.oT&Q.\—Maanedsskrift for Dyrlaeger, 

 Copenhagen, xxxi, 1919-20, pp. 289-313. 



Mange in the horse caused by Sarcoptes scabiei was formerly a rather 

 rare disease in Denmark, but lately it has become not uncommon, 

 most probably owing to the increased importation of Russian horses. 

 This paper also deals with the role of this disease during the war and 

 describes the author's experiences in dealing with it. 



Wesenberg-Lund (C). Insektlivet i ferske Vande. [Insect Life in 

 fresh waters]. — GyldendalskeBoghandel, Nordisk Forlag, Copenha- 

 gen, 1915, 528 pp. Price 11.25 Kr. 



In this vohiminous work the author has collected together his many 

 valuable notes on aquatic insects (including CuHcids and other Nemato- 

 cera). The literature on the subject has been consulted with great 

 thoroughness, and the whole forms a very valuable compendium of 

 the known facts on the biology of aquatic insects up to the date of 

 pubhcation (1915). 



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