156 
Pnhlications received 
This insect develops most readily in 0'75% normal saline; and when jars of 
fresh water, normal saline, and sea-water, respectively, are placed in the 
mosquito cages, the insects la}' most of their eggs on the jar containing the 
normal saline. This species is thus well adapted for living in islands where 
only brackish water is present, h. 
Howard, L. 0. (1911). The House-fly disease carrier, an account of its dangerous 
activities and of the means of destroying it. New York; F. A. Stokes Company. 
312 pp., 41 illustrations. 21 xl4 cm. Price $1.60 net, cloth. 
Whilst avowedly popular in character, this book may be consulted with 
great profit by the scientific reader, since it contains much useful information 
gathered from scattered publications and presented in a condensed and con¬ 
venient form. The illustrations, many of which are original, are in some cases 
of extraordinary merit. The zoological position, life-history and habits of 
Musca domestica Linn, form the subjects of the first chapter, and the chajjters 
that follow deal with the natural enemies of the house-fly; the part flies play 
as disease-carriers; remedies and preventive measures directed against house¬ 
flies; other species of flies which frequent houses. A good bibliogi’aphy and 
five appendices conclude the work. The apijendices relate severally to: flies 
frequenting human dejecta and found in kitchens; flies reared from cow 
manure; Health Department regulations against flies in the United States; 
directions for building a sanitary privy; a simple apparatus for use in the safe 
dispoisal of night-soil. 
The author and publishers are to be congratulated upon this excellent book, 
which is the be.st presentation of the subject which has hitherto appeared, x. 
Klienebhrger, C. and Carl, W. (1912). Die Blut-Morphologie der Lahoratoriums- 
Tiere. 109 pp., 14 coloured plates with legends. 24x16 cm. Leipzig; Johann 
Ambrosius Barth. Price unbound, 10 marks. 
This beautifully illustrated little work should prove most useful to those 
working upon the conqsarative morphology of the blood and u23on Haematozoa. 
The authors have not confined their attention merely to the blood of ordinary 
laboratory animals (mouse, rat, guinea-^tig, rabbit, cat and dog) for they also 
fully illustrate and describe the blood of other animals which are not so 
commonly examined (hedgehog, shee^i, monkey, fowl, ^^igeon and frog). The 
studies carried out by the authors u^wu the various kinds of blood were 
carefully conducted, having regard to the health of the animals from which the 
sam^Jles were taken. Due care moreover was taken to examine the blood in 
animals under varying conditions, i.e. during hibernation, gestation or when in 
heat. The blood was examined according to the usual clinical methods. 
Haemoglobin determinations were made with Sahli’s apjDaratus, blood counts 
with the Thoma-Zeiss a^q^aratus. The blood elements were examined in films 
and sections stained in a variety of ways. 
Taking the blood of the white mouse as an example, the authors state how 
sam^Jles thereof should be taken, and describe the variations in the pro23ortions 
of the various elements in dift’erent parts of the body and under difierent 
conditions in animals fed and unfed. They conclude the description with a 
tabular statement containing average figimes for Haemoglobin content, and 
the j^rojjortionate numbers of the various blood elements. 
