[NATURAL SCIENCES]. Lot of five works. A lot bringing together a rare work by Vallisnieri, an encomiastic publication on the life of the Veronese diplomat and scientist Sagramoso, the first edition of the illustrated treatise by Trecchi on flax cultivation in the Veneto region, and the rare first edition of Landriani's treatise on thermics, animal poisoning by gas, and other chemical compounds. Also included is a study copy of the first edition of Frisi's work, which contains: '1. On the meteorological influences of the moon. On electric conductors. 3. On the effect of oil on water. 4. On the superficial and central heat of the Earth. 5. On underground rivers.' VALLISNIERI, Antonio (1661-1730). Prima raccolta d'osservationi, e d'esperienze... Venice: Albrizzi, 1710. 8vo (168 x 103mm). 8 (of 10, according to OPAC SBN, though the digitised copy also has 8), 2 in-text illustrations, uncut (light foxing). Contemporary rustic paper. [IN LOT WITH:] LANDRIANI, Marsilio (1751-1815). Opuscoli fisico-chimici. Milan: Pirola, 1781. 8vo (220 x 135mm). 1 large folding plate at the end, attractive vignettes in the text, uncut. Contemporary rustic paper (defects). [WITH:] CELESTI, Giuseppe. Elogio storico del balì F. Michele Errico di Sagramoso. [s.l., s.e., ca. 1791]. 8vo (204 x 140 mm). 30 numbered pages, engraved headpiece, printed on blue paper. Contemporary silk binding with ties (worn). [WITH:] TRECCHI, Giovanni Battista (18th century). Coltivazione e governo del lino marzuolo con dodici tavole in rame. Vicenza: Bardella, 1792. 4to (310 x 220mm). Copper-engraved title-page, 12 folding copper-engraved plates, arms of dedicatee Alvise Morosini to second leaf, uncut (waterstain to outer margin). Contemporary patterned boards. [WITH:] FRISI, Paolo. Opuscoli filosofici. Milan: Giuseppe Galeazzi, 1781. 8vo (225 x 150mm). Waterstains. Contemporary marbled wrappers (defects). (5)