Sir,?I have read with great interest the article, 'A Case of Giardiasis' by H. S. Andleigh, in the June 1942 number of the Indian Medical Gazette. The author reports the striking results of treating a case of giardiasis with atebrin but does not offer any explanation for this, at first sight, surprising result. As this article may lead to further experiments with this method I may perhaps be pe...