Lazzaro Spallanzani definition of Lazzaro Spallanzani in the Free Online Encyclopedia.

Spallanzani, Lazzaro

Born Jan. 12, 1729, in Scandiano; died Feb. 12, 1799, in Pavia. Italian naturalist.

Spallanzani graduated from the University of Bologna. He was a professor at universities in Reggio nell’Emilia (from 1755), Modena (from 1763), and Pavia (from 1769).

Spallanzani worked in various fields of natural science, but his studies in experimental biology are particularly well known. He was the first to demonstrate experimentally the impossibility of spontaneous generation of microscopic organisms (Infusoria). Using microscopy, he studied regeneration in amphibians; also, he was the first to carry out artificial fertilization in amphibians and mammals. He found that eggs do not begin to develop until they have made contact with sperm. However, as an ovist (an adherent of preformation), he assumed that seminal fluid rather than spermatozoa is the major factor in fertilization because it stimulates the growth of the organism, which apparently preexists in the egg. Spallanzani also studied blood circulation, respiration, digestion, and the sense organs.

WORKS

Le opere, vols. 1–5. Milan, 1932–36.
Epistolario, vols. 1–5. Florence, 1958–64.

REFERENCE

Prandi,D. Bibliografía delle opere di L. Spallanzani. Florence, 1951.

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No references found	21, 1769, is addressed to the scientist Lazzaro Spallanzani, the last letter, without date, but probably written in April 1796, the year of Caminer's death, is in another hand and addressed to an unidentified "Preg[evo]le Amico. Rita Unfer Lukoschik, ed. Lettere di Elisabetta Caminer (1751-1796): ... by Costa-zalessow, Natalia / Italica These natural phenomena were discovered in 1794 by Italian Lazzaro Spallanzani (1729-1799). Ultrasound technology offers precise delivery information by Margulies, Dan / Real Estate Weekly Her discussion of the important ovist Lazzaro Spallanzani begins with a mention of his education by a female professor at the University of Bologna, Laura Bassi (also the mother of eight children) (p. The Ovary of Eve: Egg and Sperm and Preformation by Thomas, Joe A. / The Journal of Sex Research	Lazio Lazistan Lazo, Sergei Lazo, Sergei Georgievich Lazovsk Lazslo Benjamin Lázsló Benjámin lazuli Lazulite Lazurite Lazurkina, Dora Lazurkina, Dora Abramovna Lazurskii, Aleksandr Lazurskii, Aleksandr Fedorovich lazy evaluation lazy H antenna lazy jack lazy list Lazy SML lazy sml2c Lazy Standard ML lazy susan lazy write Lazybones Lazzari, Costantino Lazzaro Spallanzani Lazzaroni Lazzi lb lb ap lb apoth lb t lb tr LBA LBE lbf lbf-ft LBL LBM Lbr LBRV LBS LBX LC LC connector LC filter LC ratio LC shutter glasses LC50 LCA LCAO	Lazy S Incision Lazy SML lazy sml2c Lazy Standard ML lazy Susan lazy Susan lazy Susans lazy Susans Lazy Task Creation lazy tongs lazy write Lazy, Stupid, and Godless Lazy-S incision Lazyass Lazyass Lazyass Lazyback Lazybed lazybones lazybones Lazyhuff Lazyness Lazyness Lazyness Lazzano Spallanzani Lazzano Spallanzani Lazzaretto Lazzaretto Lazzaretto Lazzari, Costantino Lazzaro Spallanzani Lazzaroni Lazzaroni Lazzi Lazzo lb lb lb lb lb lb lb ap lb ap lb apoth lb avdp lb t lb tr lb tr LB-AODV LB-MPIR lb. LB/HR Lb/min LB/TS LB1 LB2L LB44 LBA LBA LBA compete LBA TESS

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21, 1769, is addressed to the scientist Lazzaro Spallanzani, the last letter, without date, but probably written in April 1796, the year of Caminer's death, is in another hand and addressed to an unidentified "Preg[evo]le Amico.

Rita Unfer Lukoschik, ed. Lettere di Elisabetta Caminer (1751-1796): ... by Costa-zalessow, Natalia / Italica

These natural phenomena were discovered in 1794 by Italian Lazzaro Spallanzani (1729-1799).

Ultrasound technology offers precise delivery information by Margulies, Dan / Real Estate Weekly

Her discussion of the important ovist Lazzaro Spallanzani begins with a mention of his education by a female professor at the University of Bologna, Laura Bassi (also the mother of eight children) (p.

The Ovary of Eve: Egg and Sperm and Preformation by Thomas, Joe A. / The Journal of Sex Research