Pedzisa mutsara unotevera: Chirango bedzi chorudzi rupi norupi icho John Langenus aifanira kupa mumitambo yake yose ari mutariri mukati meMitambo yeNyika mitatu yakanga iri kubviswa kweGermany Hans Pesser muminiti ye6 yekuwedzera nguva munguva yekutanga kutenderera mumutambo mu
1938 makwikwi neSwitzerland muParc des Princes, Paris, France, musi wa4 Chikumi 1938. Mushure memaminitsi zana nemakumi maviri emutambo, zvibodzwa zvakaramba zviri 1<unk>1, uye zvaifanira kugadziriswa nekudzokorora mazuva mashanu gare gare, maSwitzerland akakunda 4<unk>2 (kunyangwe Langenus asina kubata sarudzo).