10,846 Free Images of Scientific Research

jacques burkhardt scientific drawings harvard university jacques burkhardt watercolor on paper pencil on paper

Ophioderma (Florida), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Micropteryx cosmopolita Agassiz, Jacques Burkhardt, 30 April 1865

jacques burkhardt scientific drawings watercolor on paper

Natica Heros (seven views) (Chelsea, Mass., 27 March 1847), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Stingray (New York, N.Y., 23 November 1847), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Three needlefish heads (Boston, Mass., 1848), Jacques Burkhardt, 1848-??-??

jacques burkhardt scientific drawings pencil on paper

Thracia (Chelsea Beach, Mass.), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Three needlefish heads (Boston, Mass., 1848), Jacques Burkhardt, 1848-??-??

jacques burkhardt scientific drawings pencil on paper

Uranoscopus occidentalis Ag., Jacques Burkhardt, 2 June 1865

jacques burkhardt scientific drawings watercolor on paper

Chelys marginata (top view) (1857), Jacques Burkhardt, 1857-??-??

jacques burkhardt scientific drawings watercolor on paper

Panulirus argus (1855), Jacques Burkhardt, 1855-??-??

jacques burkhardt scientific drawings watercolor on paper

Serranus (Bermuda, 1862; fish and partial fin), Jacques Burkhardt, 1862-??-??

jacques burkhardt scientific drawings pencil on paper

Unidentified fish (Santa Cruz, California, March 1854), Jacques Burkhardt, 1854-03-??

jacques burkhardt scientific drawings watercolor on paper

Testudo polyphemus head (front view), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Chelys fimbriata (bottom view), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Acrotonus arenatus Agassiz, Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Ophisurus, Jacques Burkhardt, 13 July 1865

jacques burkhardt scientific drawings watercolor on paper

Engraulis tricolor, Jacques Burkhardt, 21 June 1865

jacques burkhardt scientific drawings watercolor on paper

Gardinho redondo, Jacques Burkhardt, 19 July 1865

jacques burkhardt scientific drawings watercolor on paper

Serranus (Florida, June 1860), Jacques Burkhardt, 18 June 1860

jacques burkhardt scientific drawings watercolor on paper

Unidentified fish (Santa Cruz, California, March 1854), Jacques Burkhardt, 1854-03-??

jacques burkhardt scientific drawings watercolor on paper

Sea bass? (Santa Cruz, California, March 1854), Jacques Burkhardt, 1854-03-??

jacques burkhardt scientific drawings watercolor on paper

Pagurus pollicaris Say? (1855), Jacques Burkhardt, 1855-??-??

jacques burkhardt scientific drawings watercolor on paper

Chelys marginata (bottom view) (1857), Jacques Burkhardt, 1857-??-??

jacques burkhardt scientific drawings watercolor on paper

Solen ensis (Nahant, Mass., 1864) (6 drawings), Jacques Burkhardt, 1864-??-??

jacques burkhardt scientific drawings pencil on paper

Cichlids (Lago Maximo, Brazil; 3 fish and 1 anatomical cross section), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Chelys marginata (side view) (1857), Jacques Burkhardt, 1857-??-??

jacques burkhardt scientific drawings watercolor on paper

Diodon (New York?, December 1862; fish and 4 tail drawings), Jacques Burkhardt, 1862-12-??

jacques burkhardt scientific drawings pencil on paper

Unidentified fish (Jacksonville, Florida), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Two starfish (Neuchatel, Switzerland, 1837), Jacques Burkhardt, 1837-??-??

jacques burkhardt scientific drawings pencil on paper

Carcharias and anatomical cross sections (Charleston, South Carolina, 1853), Jacques Burkhardt, 1853-??-??

jacques burkhardt scientific drawings pencil on paper

Tima formosa (Boston, Mass., 16 May 1859), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Unidentified fish (Cambridge, Mass., 1853), Jacques Burkhardt, 1853-??-??

jacques burkhardt scientific drawings watercolor on paper

Chelys fimbriata (side view), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Elops saurus, Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Tetraodon spengleri, Jacques Burkhardt, 22 July 1865

jacques burkhardt scientific drawings watercolor on paper

Sea bass? (New Providence Island, Bahamas, April 1861), Jacques Burkhardt, 1861-??-??

jacques burkhardt scientific drawings watercolor on paper

Pleurops (Lago Jose, Brazil), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Sea bass? (Santa Cruz, California, March 1854), Jacques Burkhardt, 1854-03-??

jacques burkhardt scientific drawings watercolor on paper

Odostomia exigua (East Boston, Mass., August 1847), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Five mollusks (Nahant, Mass., 1864), Jacques Burkhardt, 1864-??-??

jacques burkhardt scientific drawings pencil on paper

Mytilus and Modiolus, Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Tetragonopterus, Jacques Burkhardt, 19 May 1865

jacques burkhardt scientific drawings watercolor on paper

Semionotus fultus (New York, N.Y.), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Mya arenaria (East Boston, Mass., 3 June 1847) (6 drawings), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Sanguinolaria fusca (East Boston, Mass., 3 June 1847), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Tetragonopterus Art., Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Snail (side view) (1855), Jacques Burkhardt, 1855-??-??

jacques burkhardt scientific drawings watercolor on paper

Ophioderma (Charleston, South Carolina, 1 December 1847), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Corniger spinosus Agassiz (orange-red), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Macrodon trahira, Jacques Burkhardt, 23 May 1865

jacques burkhardt scientific drawings watercolor on paper

Hypopygus sp. (Lake January, Brazil), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Unidentified fish (Sombrero Islands, West Indies, September 1859), Jacques Burkhardt, 1859-??-??

jacques burkhardt scientific drawings watercolor on paper

Ophiothrix angulata (five specimens) (Charleston, South Carolina), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Engraulis Janeiro, Jacques Burkhardt, 8 July 1865

jacques burkhardt scientific drawings watercolor on paper

Tortoise (side view) (March 1851), Jacques Burkhardt, 1851-03-??

jacques burkhardt scientific drawings watercolor on paper

Cabrinha, Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Microsternarchus bilineatus (Lago Maximo, Brazil, 1866), Jacques Burkhardt, 1866-??-??

jacques burkhardt scientific drawings watercolor on paper

Fish anatomical cross section (New York, N.Y., 1848), Jacques Burkhardt, 1848-??-??

jacques burkhardt scientific drawings watercolor on paper

Panulirus argus (Boston, Mass., August 1860) (5 drawings), Jacques Burkhardt, 1860-08-??

jacques burkhardt scientific drawings pencil on paper

Snake (8 February 1860; snake and head), Jacques Burkhardt, 8 February 1860

jacques burkhardt scientific drawings watercolor on paper

Needlefish head (top view) (New York, N.Y., 1848), Jacques Burkhardt, 1848-??-??

jacques burkhardt scientific drawings pencil on paper

Pectinibranchiata (January 1853), Jacques Burkhardt, 1853-01-??

jacques burkhardt scientific drawings pencil on paper

Petrolisthes (1855) (2 drawings), Jacques Burkhardt, 1855-??-??

jacques burkhardt scientific drawings pencil on paper

Testudo polyphemus head, Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Needlefish (top view) (Boston, Mass., 1848), Jacques Burkhardt, 1848-??-??

jacques burkhardt scientific drawings pencil on paper

Gardinho, Jacques Burkhardt, 19 July 1865

jacques burkhardt scientific drawings watercolor on paper

Unidentified fish, Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Hemirhamphus brasiliensis Cuv., Jacques Burkhardt, 4 May 1865

jacques burkhardt scientific drawings watercolor on paper

Three brittle-stars (Tortugas, Florida, 11 February 1852), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Tima formosa (Boston, Mass., 17 May 1859), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Chelys fimbriata (side view) (Amazon River; Cambridge, Mass., 7 March 1863), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Porichthys, Jacques Burkhardt, 10 July 1865

jacques burkhardt scientific drawings watercolor on paper

Ischypterus Mortoni (Fossil) (New York, N.Y., 1861), Jacques Burkhardt, 1861-??-??

jacques burkhardt scientific drawings watercolor on paper

Unidentified fish (March 1854), Jacques Burkhardt, 1854-03-??

jacques burkhardt scientific drawings watercolor on paper

Tima formosa (Boston, Mass., May 1859), Jacques Burkhardt, 1859-05-??

jacques burkhardt scientific drawings pencil on paper

Tortoise on grass (side view) (1858), Jacques Burkhardt, 1858-??-??

jacques burkhardt scientific drawings pencil on paper

Uaru amphiacanthoides (Lago Maximo, Brazil), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Unidentified amphibian (June 1869; top view and bottom view), Jacques Burkhardt, 1869-06-??

jacques burkhardt scientific drawings watercolor on paper

Pleurogramma (Acara petit) (Lago Maximo, Brazil), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Planorbis (back of sheet) (Fresh Pond, Cambridge, Mass., 7 May 1848), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Sternotherus odoratus (anatomical part) (three views) (Boston, Mass., 8 June 1847), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Mamamo, Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Unidentified amphibian (23 January 1869; top view and side view), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Saxicava (Nahant, Mass., 1864) (9 drawings), Jacques Burkhardt, 1864-??-??

jacques burkhardt scientific drawings pencil on paper

Three mollusks (Nantucket, Mass.?), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Satanoperca lilith, Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Pomacentrus, Jacques Burkhardt, 3 June 1865

jacques burkhardt scientific drawings watercolor on paper

Monacanthus, Jacques Burkhardt, 26 June 1865

jacques burkhardt scientific drawings watercolor on paper

Needlefish head (New York, N.Y., 1848), Jacques Burkhardt, 1848-??-??

jacques burkhardt scientific drawings pencil on paper

Cistudo carolina (side view of head), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Callianassa major (10 January 1845) (2 drawings), Jacques Burkhardt, 10 January 1845

jacques burkhardt scientific drawings pencil on paper

Plectropoma puella, Jacques Burkhardt, 3 June 1865

jacques burkhardt scientific drawings watercolor on paper

Unidentified fish (Santa Cruz, California, March 1854), Jacques Burkhardt, 1854-03-??

jacques burkhardt scientific drawings watercolor on paper

Ophiopholis aculeata (Boston Harbor, Mass., January-February 1848), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Pimelodus? (Belem, Para, Brazil), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Gerres lineatus, Jacques Burkhardt, 13 July 1865

jacques burkhardt scientific drawings watercolor on paper

Three needlefish heads (Boston, Mass., 1848), Jacques Burkhardt, 1848-??-??

jacques burkhardt scientific drawings pencil on paper

Pandora trilineata (East Boston, Mass., 21 June 1848), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Unidentified fish (Nahant, Mass., 31 July 1850), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Two echinoderms (Neuchatel, Switzerland, 1837), Jacques Burkhardt, 1837-??-??

jacques burkhardt scientific drawings watercolor on paper

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