Pic­tures Con­sid­ered #8 by Elio — Elec­tron mi­croscopy of phages came into promi­nence in the 1950's and re­vealed many of their phys­i­cal at­trib­utes such as their par­tic­u­late na­ture, mor­pho­log­i­cal com­plex­ity, "tail first" at­tach­ment to host cells, etc. Among these dis­cov­er­ies was that T‑even col­iphages con­tract their tail upon ab­sorp­tion to their E. coli hosts. A 1967 pa­per…