CH2(COOC2H5)2 I proved C2HsONa...

6
I'ke a proved formula CH2(COOC2H5)2 + C I CH2COOC2Hs + C2HsONa = CH(COOC2Hs)2 CH2COOC2Hs + C2HsOH + NaC I I... s Model 120-I of 45 models available For more than 40 years laboratory people have been justified in relying on Freas. During many of these years we were un- able to produce Freas units as fast as they were called for. Now, after notable expansion, we can ship most models from stock. Freas quality, far from being compromised, has actually been improved. *Ask your laboratory supply dealer about Freas ovens, incubators or sterilizers. Write for| CATALOG 331A Precision Scientific Companm 3739 West Cortland Street Chicago 47

Transcript of CH2(COOC2H5)2 I proved C2HsONa...

I'ke a

provedformula

CH2(COOC2H5)2 +C I CH2COOC2Hs +C2HsONa =

CH(COOC2Hs)2CH2COOC2Hs +C2HsOH + NaC I

I... s

Model 120-I of 45 models available

For more than 40 years laboratory people have been justifiedin relying on Freas. During many of these years we were un-able to produce Freas units as fast as they were called for.Now, after notable expansion, we can ship most models fromstock. Freas quality, far from being compromised, has actuallybeen improved.

*Ask your laboratory supply dealer about Freas ovens, incubators or sterilizers.

Write for|CATALOG 331A

Precision Scientific Companm3739 West Cortland Street Chicago 47

Walker -

VertebrateDissection

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a new, immediately usabl,lab manual

Emphasis in this new laboratory manual is on themajor anatomical transformations that have occurredin the vertebrates in the course of their evolution fromfish to mammal. The author has organized the book bysystems. Under each system he gives clear, descriptiveguides to the dissection of several vertebrates represent-ing the three levels of organization. The dogfish(Squalus) is used as an example of a primitive, jawedfish; the mudpuppy (Necturus) represents the primi-tive terrestrial vertebrate; and both the cat (Felis) andthe rabbit (Lepus) exemplify the mammal.Teachers will find the material readily adaptable totheir particular comparative anatomy course and toany standard text.By WARREN F. WALKER, JR., Ph.D., Associate Professor of Zoology,Oberlin College, Ohio. 331 pages, 6" x 9", illustrated. $3.50. New.

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This is a modern approach to cytology-the ultra-structure of the cell is considered as well as the estab-lished methods of fixation and staining. The text is asynthesis of the most important aspects of cellularstructure and function as encountered in man and inanimals. The authors use methods of physics, chemistryand biochemistry to interpret the nature of intracellularprocesses and the functional significance of cellularstructure.For this New (2nd) Edition the text has been com-pletely revised. There are new sections on: cell metabo-lism; the action of radiations and chemical agents incytogenetics; and plastids.By E. D. P. DERosERTIs, M.D., Head of the Department of CellUltrastructure, Institute for the Investigation of Biological Sciences,Montevideo, Uruguay; W. W. NowINSKI, Ph.D., Associate Professorof Biochemistry, University of Texas Medical School; and FRecIsco A.SAEZ, Ph.D., Head of the Department of Cytogenetics, Institute for theInvestigation of Biological Sciences, Montevideo. 456 pages, 6 x9,with 162 illustrations. $7.75. New (2nd) Edition.

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17 SEPTEMBER 1954 1A

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