Hendrikus Albertus Lorentz

Lorentz participated in three expeditions to Dutch New Guinea, the present-day Indonesian (western) portion of the island of New Guinea. The first was the North New Guinea Expedition in 1903, led by Arthur Wichmann. Lorentz himself led expeditions in 1907 and 1909–1910.

Hendrikus Albertus Lorentz studied at Utrecht University. The recorded working language is Dutch. Places of work recorded in the authority are New Guinea. Work by Hendrikus Albertus Lorentz is recorded in the collections of National Museum of World Cultures, Netherlands Photo Museum and Wereldmuseum Rotterdam.

• Lorentz National Park and the Lorentz River (Undir or Unir in Indonesian) in southern New Guinea • Lorentz catfish and Lorentz's mosaic-tailed rat • The non-venomous Lorentz's tree snake Dendrelaphis lorentzii (Van Lidth de Jeude, 1911). The holotype was collected at Sabang on the Noordrivier (later renamed the Lorentz River) during Lorentz's third Papuan expedition.

Lorentz collected indigenous artifacts and bird samples. The latter he sent to the Rijksmuseum van Natuurlijke Historie at Leiden, The Netherlands. Some examples: • Illustration — Flame bowerbird (Sericulus ardens) from Southern New Guinea in 1907. Original description Xanthomelus ardens, later subspecies Sericulus aureus ardens. • Illustration — Breast view of the same sample. Flame bowerbird (Sericulus ardens). • Illustration — Golden-backed whistler (Pachycephala aurea), New Guinea expedition 1909 • Illustration — Hooded pitohui (Pitohui dichrous), received 1909 • Illustration — Streak-headed honeyeater (Pycnopygius stictocephalus), New Guinea expedition 1909 • Illustration — Black thicket fantail (Rhipidura maculipectus), New Guinea expedition 1909 • Illustration — Broad-billed flycatcher (Myiagra ruficollis ruficollis), from Kupang, Timor, 1909

• (in Dutch) Eenige maanden onder de Papoea's. Leiden: E.J. Brill, 1905. • (in Dutch) Zwarte menschen - witte bergen: verhaal van den tocht naar het sneeuwgebergte van Nieuw-Guinea. Leiden: E.J. Brill, 1913. (Tweede druk 2005, Amsterdam / Antwerpen: Uitgeverij Atlas; met een voorwoord van Tijs Goldschmidt en een inleiding van A.S. Troelstra.).

• Ballard, Chris, Steven Vink and Anton Ploeg, Race to the Snow; Photography and the Exploration of Dutch New Guinea, 1907-1936. Amsterdam: KIT Publishers, 2001. • (in Dutch) Duuren, David van en Steven Vink, 'Hendrikus Albertus Lorentz (1871–1944)', in: David van Duuren, Oceania at the Tropenmuseum. Amsterdam: KIT Publishers, 2011, p. 66. • (in Dutch) Schepers, J.H.G., In Memoriam mr. H.A. Lorentz. Tijdschrift van het Koninklijk Aardrijkskundig Genootschap 63, 1946, pp. 1–7. • (in Dutch) Troelstra, Anne, Lorentz in Noord-Nieuw-Guinea, hfdst. 7 in Anne Troelstra (ed), Van Spitsbergen naar Suriname. Amsterdam/Antwerpen: Atlas, pp. 279–302.