The attached figure describes the finite state machine used in TENEX version 1.33 to implement the ARPANET Host to Host protocol. This memo updates that of 27 August 1971, TENEX memo number 113, with regard to the finite state machine. Other parts of that memo have been incorporated into the JSYS manual and other documents.

Tumors in Drosophila are in many ways similar to atypical growths in mammals, although they are dissimilar in others (6). A frequent question concerning these tumors is whether carcinogens alter their incidence. This has been tested by treat ing a tumor stock of Drosophila with 20-methylcholanthrene and is reported at this time. In a previous study (4) it was shown that the lethal mutation rate...