grassetto = Testo principale
   Cap.        grigio = Testo di commento

 1    III(22) |                               The Naturalist in Nicaragua,
 2     IV(32) |   Scott ha trovato (Report on the Experimental Culture of
 3     IV(32) |       Experimental Culture of the Opium Poppy, Rapporto sulla
 4      V(40) |      è proterandra, aggiunge (The Florist and Pomologist,
 5      V(45) |   Review, 1870, p. 168; Belt, The Naturalist in Nicaragua,
 6      X(104)|                         Belt, The Naturalist in Nicaragua,
 7      X(135)|      per mezzo degli insetti (The Various Contrivances by
 8      X(155)|        Riley, Fifth Report on the Noxious Insects of Missouri,
 9    XII(189)| dimostrato (A Contribution to the Theory of Diathesis) che
10    XII(191)|                    Journal of the Royal Agricultural Soc.