From cover flap of Hesperus Press Modern Voices edition:
Quite by chance, Professor Persikov discovers a new form of light ray whose effect, when directed at living cells, is to accelerate growth in organisms. But when this ray is shone on the wrong batch of eggs, the professor finds himself both the unwilling creator of giant hybrids, and the focus of a merciless press campaign. For it seems the propaganda machine has turned its gaze on him, distorting his nature in the very way his 'innocent' tampering created the monster snakes and crocodiles that now terrorise the neighbourhood.
An inspired work of science fiction and a biting political allegory, The Fatal Eggs tells of a brilliant scientist whose experiments with life spiral terribly - and fatefully - out of control. Written in the early years of Stalin's dictatorship, this remarkable futuristic tale proved so pertinent that, on its first publication, Bulgakov found himself labelled a counter-revolutionary by the literary press.