“…?These T+ events consist of the following: 386 events by Baldo-Ceolin, Bonetti, Greening, Limentani, Merlin andVanderhaege (1957), 191 events by Haddock (1956 andprivate communication), 106 events by , 72 events by Orear, Harris and Taylor (1956), 33 events by Heckman, Smith and Barkas (1956 b), 33 events (line scan) by Bhowmik, Evans, van Heerden and Prowse (1956), 23 events (unbiased) by Brene, Hansen, Hooper and Scharff (1956) and 49 events by Feld, Odian, Ritson and Wattenberg (1955).…”