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Reviews



desideratum. Not only records of new species bred are wanted, but

also further details for the many cases where the present ones are

scanty or doubtful, and of course corrections and necessary deletions

as well.]



REVIEWS


HEBEDITY IN THE BUDGEBIGAB


We have received from the author, Dr. Hans Steiner, a copy of his

V ererbungsstudien am Wellensittich (1932). This is a Thesis submitted

to the Philosophy Faculty of the Zurich University, and its title may

.be Englished as “A Study in Heredity in the Budgerigar”, and its

secondary title as “A Critical Contribution to the problems of domestica¬

tion ”. It deals fully with the general history from the first living arrival

in Gould’s time in 1840 up to the development of the latest colours and

breeding experiments to date, in fact with every detail and problem

connected with what can now be rightly described as the science of

Budgerigar breeding. It is to be hoped that some one competent will

come forward to translate this interesting and valuable treatise.


All that can be done here is to attempt to illustrate its scope by

translating the more important chapter headings.


ii. Historical, 34 pages.


iii. Breeding experiments, 32 pages.


iv. Genetics and analysis of the Colours and Colour-varieties, 30 pages,


v. Duncker on the Genesis and hereditary transmission of colour.

12 pages.


viii. Colour-variation and the problems of Evolution, in which

similar changes in other Parrots are well dealt with, 10 pages.


x. Bibliography, very complete.


Lastly, though certainly for many of us not least in interest, are

the ten coloured plates, diagrammatic and to scale, showing to per¬

fection the various colour-varieties known to date, Grimes, Gelbes

(2 types), Maigrimes, Blaues, Weissblaues, Olives, Kobalts, Graues,

Olivgelbes, Weissgraues, WeissTcobalts, and Grauflugels. Not being a



