14,893 Free Images of Scientific

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

Unidentified fish (Boston, Mass., 1863), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Western pond turtle? (San Francisco, California), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Pseudoplatystoma fasciatum (3 fish), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Stingray (Boston, Mass., 10 January 1860), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

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

jacques burkhardt scientific drawings pencil on paper

Tetraodon, Jacques Burkhardt, 29 June 1865

jacques burkhardt scientific drawings watercolor on paper

Upeneus maculatus, Jacques Burkhardt, 3 June 1865

jacques burkhardt scientific drawings watercolor on paper

Cichlid larvae, 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

Thracia (Chelsea Beach, Mass.), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

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

jacques burkhardt scientific drawings watercolor on paper

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

jacques burkhardt scientific drawings watercolor on paper

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

jacques burkhardt scientific drawings watercolor on paper

Tetraodon spengleri, Jacques Burkhardt, 22 July 1865

jacques burkhardt scientific drawings watercolor on paper

Macrodon trahira, Jacques Burkhardt, 23 May 1865

jacques burkhardt scientific drawings watercolor on paper

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

jacques burkhardt scientific drawings watercolor on paper

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

jacques burkhardt scientific drawings pencil on paper

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

jacques burkhardt scientific drawings pencil on paper

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

jacques burkhardt scientific drawings watercolor on paper

Mamamo, Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

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

jacques burkhardt scientific drawings pencil on paper

Plectropoma puella, Jacques Burkhardt, 3 June 1865

jacques burkhardt scientific drawings watercolor on paper

Gerres lineatus, Jacques Burkhardt, 13 July 1865

jacques burkhardt scientific drawings watercolor on paper

Ocypode albicans (Bosc), Jacques Burkhardt, 1855-02-02?

jacques burkhardt scientific drawings pencil on paper

Serranus (Bermuda, December 1862), Jacques Burkhardt, 1862-12-??

jacques burkhardt scientific drawings watercolor on paper

Three needlefish heads (Cambridge, Mass., 1849), Jacques Burkhardt, 1849-??-??

jacques burkhardt scientific drawings pencil on paper

Two brittle-stars (Key Biscayne, Florida), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Tortoise (bottom view) (April 1851), Jacques Burkhardt, 1851-04-??

jacques burkhardt scientific drawings watercolor on paper

Eight mollusk drawings (Nahant, Mass., 1864), Jacques Burkhardt, 1864-??-??

jacques burkhardt scientific drawings watercolor on paper

Tortoise (top view) (April 1851), Jacques Burkhardt, 1851-04-??

jacques burkhardt scientific drawings watercolor on paper

Three views of two fossils (New York, N.Y.), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Gastropod mollusk (Boston, Mass., July 1860), Jacques Burkhardt, 1860-07-??

jacques burkhardt scientific drawings watercolor on paper

Micropteryx cosmopolita Agassiz, Jacques Burkhardt, 30 April 1865

jacques burkhardt scientific drawings watercolor on paper

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

jacques burkhardt scientific drawings watercolor on paper

Uranoscopus occidentalis Ag., Jacques Burkhardt, 2 June 1865

jacques burkhardt scientific drawings watercolor on paper

Testudo polyphemus head (front view), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

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

jacques burkhardt scientific drawings pencil on paper

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

jacques burkhardt scientific drawings pencil on paper

Engraulis Janeiro, Jacques Burkhardt, 8 July 1865

jacques burkhardt scientific drawings watercolor on paper

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

jacques burkhardt scientific drawings pencil on paper

Cistudo carolina (side view of head), 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

Clupanodon aureus Spix, Jacques Burkhardt, 8 June 1865

jacques burkhardt scientific drawings watercolor on paper

Conger, Jacques Burkhardt, 11 June 1865

jacques burkhardt scientific drawings watercolor on paper

Two starfish (Neuchatel, Switzerland, January 1837), Jacques Burkhardt, 1837-01-??

jacques burkhardt scientific drawings pencil on paper

Nine fish-scale cross sections (New York, N.Y.), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Unidentified specimen (Cambridge, Mass., June 1852), Jacques Burkhardt, 1852-06-??

jacques burkhardt scientific drawings watercolor on paper

Three turtles (side view) (June 1854), Jacques Burkhardt, 1854-06-??

jacques burkhardt scientific drawings watercolor on paper

Uaru amphiacanthoides (Teffe, Brazil), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Cistudo carolina (3 anatomical parts) (1855), Jacques Burkhardt, 1855-??-??

jacques burkhardt scientific drawings pencil on paper

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

jacques burkhardt scientific drawings pencil 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

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

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

jacques burkhardt scientific drawings pencil on paper

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

jacques burkhardt scientific drawings pencil on paper

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

jacques burkhardt scientific drawings pencil on paper

Hemirhamphus brasiliensis Cuv., Jacques Burkhardt, 4 May 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

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

jacques burkhardt scientific drawings pencil on paper

Uaru amphiacanthoides (Lago Maximo, Brazil), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

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

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

jacques burkhardt scientific drawings watercolor on paper

Stingray (Boston, Mass., 10 January 1860), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

Three needlefish heads (Cambridge, Mass., 1849), Jacques Burkhardt, 1849-??-??

jacques burkhardt scientific drawings pencil on paper

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

jacques burkhardt scientific drawings watercolor on paper

Eight mollusk drawings (Nahant, Mass., 1864), Jacques Burkhardt, 1864-??-??

jacques burkhardt scientific drawings watercolor on paper

Pelia mutica (29 January 1851?; 2 crabs), Jacques Burkhardt, 29 January 1851

jacques burkhardt scientific drawings watercolor on paper

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

jacques burkhardt scientific drawings watercolor on paper

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

jacques burkhardt scientific drawings pencil on paper

Tetragonopterus, Jacques Burkhardt, 19 May 1865

jacques burkhardt scientific drawings watercolor 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

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

jacques burkhardt scientific drawings watercolor on paper

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

jacques burkhardt scientific drawings pencil on paper

Vandellia? (Lake January, Brazil, 20 November 1865), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Uaru amphiacanthoides (Lago Maximo, Brazil; adult), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Needlefish (Lake Erie, Buffalo, New York, February 1854), Jacques Burkhardt, 1854-02-??

jacques burkhardt scientific drawings watercolor on paper

Two mollusks and anatomical cross-section (Nahant, Mass., 1864), Jacques Burkhardt, 1864-??-??

jacques burkhardt scientific drawings pencil on paper

Pagrus or Argyrops (New York, 7 November 1847), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

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

jacques burkhardt scientific drawings pencil on paper

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

jacques burkhardt scientific drawings pencil on paper

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

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

jacques burkhardt scientific drawings pencil on paper

Dolphin? (bottom and side views) (Cambridge, Massachusetts, 31 December 1849), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Copella sp. and Pyrrhulina sp. (Lake January, Brazil; 2 fish), Jacques Burkhardt

jacques burkhardt scientific drawings watercolor on paper

Phyllidia (Sambo Key, Florida, 21 January 1857) (8 drawings), Jacques Burkhardt

jacques burkhardt scientific drawings pencil on paper

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

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

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

jacques burkhardt scientific drawings pencil on paper

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

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

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

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

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

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

Crangon heterochaelis (23 December 1851), Jacques Burkhardt, 23 December 1851

jacques burkhardt scientific drawings watercolor on paper

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