Errare humanum est

In the erratum published in the issue of 13 February (p. 656), Tables 1 and 2 from the report "Mutagenicity of fly ash particles in Paramecium" by J. Smith-Sonneborn et al. (9 Jan., p. 180) were printed incorrectly. Significance lines missing in the original tables were also missing in the erratum. With determination, we again reprint the tables as they should have appeared (Table 1 above, Table 2 at right).     

Erratum

Due to a last minute printer's error, the 18 November Table of Contents omitted mention of a Research News article on "The 1977 Nobel Prize in chemistry" by I. Procaccia and J. Ross.     

Erratum

In the report "Aborginal Indian residence patterns preserved in censuses and allotments" by John H. Moore (11 Jan., p. 201), Table 1 was inadvertently omitted: Table 1. Distances from mothers' to married children's allotments for first-generation descendents of Sand Creek family heads. [See table in the PDF file].     

Erratum

In the report "Mutagenicity of fly ash particles in Paramecium" by J. Smith-Sonneborn et al. (9 Jan., p. 180), Tables 1 and 2 are printed incorrectly. Significance lines are missing from both tables and "uninduced" should read "induced" in the sixth, eighth, and ninth entries of the first column in Table 1. The tables are reprinted below as they should have appeared. Table 1. Mutagenic effect of fly ash and heat-treated fly ash in Paramecium. Values not connected by the same line are significantly different from each other (Wilcoxon matched-pairs signed-ranks test, alpha = .05). The data from six experiments were pooled since the control values for autogamous progeny were not significantly different. Cerophyl is the ryegrass extract used for cultivation of Paramecium. Induced S-9 is the Ames liver microsome fraction from rats receiving Arochlor 1254 (polychlorinated biphenyl) to activate the enzymes for conversion of promutagens to mutagenic form; uninduced S-9 is from rats receiving corn oil only (the vehicle for the Arochlor). Glass beads (1 to 3 ,microm) suspended in either induced or uninduced S-9 were used as a negative control for nonnutritive particles. Kaolinite was also used in one experiment, and the results were the same as those for the glass beads. Benzo[a]pyrene was the positive control for mutagenicity requiring induced S-9. The initial concentration of suspended fly ash was 535 ,microg/ml. The average number of affected progeny from treated parent cells was 20 percent higher than the average number of affected control progeny. Since one mutation would theoretically yield only 4 affected progeny in 16 autogamous progeny from a treated parent cell (6), the percentages, though low, reflect significant damage. [See table in the PDF file] Table 2. Mutagenicity of heat-treated fly ash extracted with HCl or DMSO. Values not connected by the same line are significantly different from each other (pairwise comparisons of proportions, P < .05). The concentration of fly ash particles suspended in uninduced S-9 was 1068 ,ug/ml. The higher than usual value for mutagenicity in the controls can be attributed to the considerable age of the clone used here [micronuclear damage increases with age (12)]. [See table in the PDF file].     

Erratum

In the report "Site-specific nick in the T-DNA border sequence as a result of Agrobacterium vir gene expression" by K. Wang et al. (30 Jan., p. 587), figure 2A on page 588 should have shown a 3.2-kilobase band in lane b that was not visible. Also, 1.9-kilobase bands in lane c and g were not visible. A Print that shows the bands in figure 2, A and B, appears below. In addition, reference 24 should have been to J. L. Slightom, L. Jouanin, F. Leach, R. F. Drong, D. Tepfer, EMBO J. 4, 3069 (1985). [See Table A and B in Source PDF].     

Erratum

In the report "Aflatoxin production by a variant of Apergillus oryzae (NRRL strain 1988) on cowpeas (Vigna sinensis)" by N. El-Hag and R. E. Morse [192, 1345 (1976)], the third sentence in the legend to Table 1 should read "This strain produced aflatoxin on rice (expressed as micrograms per kilogram ...)." Also, the heading for columns 2 and 3 of Table 1 should read "Aflatoxin (microg/kg) from A. oryzae."     

Erratum

In Table 1 of the report "Monoclonal antibody to Thy-1 enhances regeneration of processes by rat retinal ganglion cells in culture" by D. Leifer et al. (20 Apr., p. 303), the unit of measurement, micrometers, was omitted in the third column, "Mean length of processes per cell."     

Erratum

In Table 1 (p. 351) of the report "Structure-activity studies of interleukin-2" by F. E. Cohen et al. (17 Oct., p. 349), reference 15 was incorrectly cited for the entries for the 1-29, 30-49, and 100-133 deletion mutants. For all three entries, the reference should have been (16).     

Mechanism of Antibody Synthesis: Size Differences between Mouse Kappa Chains

In the report "Mechanism of antibody synthesis: size differences between mouse kappa chains" by W. R. Gray et al. (27 Jan., p. 465), the headings of the final two columns of Table 1 should be reversed to read "Transversions" and "Transitions."     

Erratum

In the news article, "More seismic research asked to improve atomic test detection" [Science 130, 26 (3 July 1959)], the second figure in column 2 of Table 1 should have been 1500, not 20-100.     

Erratum

In the report "Transcontinental baselines and the rotation of the earth measured by radio interferometry" by I. I. Shapiro et al. [186, 920 (1974)], the heading for columns 5 and 6 of Table 1 should read "Atomic time-universal time (A.1-UT.1)" and the second entry of column 1 should be followed by a double dagger (double dagger).     

Erratum

In the report by H. Vasken Aposhian on "Protection by d-penicillamine against the lethal effects of mercuric chloride" [Science 128, 93 (11 July 1958)], the heading of the last column of Table 1 should have been "Percent," and not "Survival (%)." Mortality, and not survival, is given in this column.     

Erratum

Table 3 of the report "Seroprevalence and epidemiological correlates of HTLV-I infection in U.S. blood donors" by Alan E. Williams et al. (29 Apr. 1988, p. 643) contained errors. The correct table is printed below. [See Table 3 in Source Pdf.].     

Erratum

Table 1 of the report "Reversible cleavage and ligation of hepatitis delta virus RNA" by H.-N. Wu and M. M. C. Lai (3 Feb., p. 652) contained an error. The religation percentage when the concentration of Mg(2+) in the cleavage reaction was 2.4 mM and the concentration of EDTA was 3.0 mM should have been 10. The correct table is printed below.     

Lactate dehydrogenase isozymes: further kinetic studies at high enzyme concentration

In the report "Lactate dehydrogenase isozymes: Further kinetic studies at high enzyme concentration" by Thomas Wuntsch, Raymond F. Chen, and Elliot S. Vesell [169, 480 (1970)], 14.0 mM NAD in line 2 of the heading of Table 1 should read 14.0 , microM NAD.     

Erratum

One component (i-inositol at a concentration of 0.002 g/lit) of the nutrient medium was omitted from Table 1 of the article "Molecular Growth Requirements of Single Mammalian Cells," by G. Sato, H. W. Fisher, and T. T. Puck [Science 126, 961-964 (8 Nov. 1957)].     

Inhibition of the Effect of Some Carcinogens by Their Partially Hydrogenated Derivatives

The names of the compounds in the last three lines of Table 1 in "Inhibition of the effect of some carcinogens by their partially hydrogenated derivatives" by Kotin, Falk, Lijinsky, and Zechmeister [Science 123, 102 (20 Jan. 1956)] should read dihydrodibenzanthracene, decahydrodibenzanthracene, and perhydrodibenzanthracene.     

新疆兵团盐渍化农田现状与防治对策

为了研究新疆兵团土壤盐渍化现状问题,2015?2017年基于盐碱地划分标准设计了盐碱地分类面积表、盐碱地化学类型表、不同程度盐碱地生产状况表和盐碱地改良状况表等4份调查表,对139个团场进行盐渍化调查。调查结果表明,兵团盐渍化农田面积约为53.1万hm²,占总播种面积（120.2万hm²）的44%,盐渍化耕地中约23.2%为原生盐渍土,76.8%为次生盐渍土;硫酸盐型、氯化物型、苏打型和碱土型盐渍化耕地的面积分别为16.19万、5.85万、20.65万、10.41万hm²,分别占兵团盐渍化土壤面积的30.5%、11.0%、38.9%、19.6%。次生盐渍化普遍造成作物减产,化肥和有机肥投入量随着盐渍化加剧而增加。目前,盐碱地治理的方法有水利改良、农业改良、生物治理和化学改良,但是不同改良方法的改良效果差别较大,水利措施和农业措施改良效果较好。为防治土壤盐渍化,需建立兵团耕地质量数据库和兵团盐渍化农田综合治理领导小组,联合疆内外高校共同开展技术攻关与技术集成。     

在《中图法》A大类后应恢复领袖著作的“写作年代表”

指出了《中图法》第4版A大类后删除“马克思、恩格斯、列宁、斯大林、毛泽东部分著作写作年代表”的不足，及由此带来的不便。主张应恢复原表，并相应增加“邓小平部分著作写作年代表”，以利于同类书按写作年代顺序排。     

Erratum

In the report by N. Yamamoto et al., "Transformation of human leukocytes by cocultivation with an adult T cell leukemia virus producer cell line" (20 Aug., p. 737), the column headings in Table 1, on page 738, under "Cells with markers (%)," should have read: Leu 1, Leu 2a, Leu 3a, Leu 4, and Ia (not immunoglobulin A).