All five parts bound together.
Contains 5 thesis on Finnish poetry written by H.G. Porthan with different resdondentes.
Dates of imprint from titles.
T.p. part 2 reads: 'D.A.G. dissertationis de poësi Fennica, particula secunda, quam, Consens. Ampl. Philos. in Reg. Acad. Aboënsi, Publico Examini subiiciunt auctor Henricus Gabriel Porthan, et respondens Jacobus Wegelius, Ostrobotnienses. In auditorio majori d. 23 Junii Anni 1768. H.a.m.c.'.
T.p. part 3 reads: 'D.A.G. Dissertationis de poësi Fennica, particula tertia, quam Consent. Ampl. Senat. Philos. in Reg. Acad. Aboënsi, Publico examini subiiciunt præses Henricus Gabr. Porthan ... et respondens Simon Appelgren, Ostrobotniensis. In auditorio majori Die 15. Aprilis An. 1778. H.a.m.c.'.
T.p. part 4 reads: 'D.A.G. Dissertationis de poësi Fennica, particula quarta, quam Consent. Ampl. Senat. Philos. in Reg. Acad. Aboënsi, Publico examini subiiciunt præses Henricus Gabr. Porthan ... et respondens Johan. Kerchström, Nylandus. In auditorio majori Die 15. Aprilis An. 1778. H.p.m.c.'.
T.p. part 5 reads: 'D.A.G. Dissertationis de poësi Fennica, particula quinta, quam Consent. Ampl. Senat. Philos. in Reg. Acad. Aboënsi, Publico examini subiiciunt præses Henricus Gabr. Porthan ... et respondens Adolphus Magnus Foeder, Nylandus. In auditorio majori Die 23 Maji, An. 1778, H.a.m.c.'.