88 I~OTES AND NEWS
T h e s t r u c t u r e of dickite: c o r r e c t i o n E. V. KOLONTSOVA, I. V. TELEGINA and G. M. PLAVNIK.
O n the structure of the slip bands of certain ionic crys-
Errors occur in the above article by R. E. Newnham
tals.
& G . W . Brindley (Acta Cryst. (1956), 9, 759). In
V. I. STARTSEV, V.M. KOS~.WCH and Ju. S. TOMENKO.
Table 4 the refined x/a coordinates should read 0"273
Investigation of the intersection of twinned layers in
in place of 0.263 for atom O2, and 0.763 in place of
single crystals of calcite.
0.773 for atom Oa.
V. I. STARTSEV, V. i~i.KOSEVICH and Ju. S. T O M E N K O .
The Si-O distances of Table 6 have been re-checked
Investigation of the intersection of twinned layers in
by the authors and differ slightly from those given
single crystals of antimony, bismuth and zinc.
previously. The amended values are:
V. V. Z U B E ~ O and M. M. U M A N S K I L X-ray determina-
~i1-01 1"61 A Si~-O 1 1"62 A tion of the thermal expansion coefficients of poly-
Sil-O~ 1"64 Si~-Oe 1'66 crystalline substances in the range -- 50 ° C. to W- 100 ° C.
Sil-O 3 1"62 Si2-O 3 1"63 JA. I. GRAEVSKAJA, V.I. IVERONOVA and V.P. TARA-
Si~-O~ 1"62 Si~-O~ 1"68 SOVA. A specialized apparatus for determining the
Average Si-O, 1.635 intensities of X-ray reflexions by means of Geiger
counters,
M. M. U~ANSKII and D. M. KHEJKER. X-ray goniometric
Crystallographic c a l c u l a t i o n s on the hip, h - methods of investigating crystals.
speed digital computer SWAC: correction Ju. K. IOFFE. X-ray apparatus for structure analysis
An error occurs in equation (19) of the above paper by with ionization recorders of types URS-50 I and
URS-25 I.
R. A. Sparks, R. J. Prosen, F. H. Kruse & K. N. Trueblood
(Acta Cryst. (1956), 9, 350): only the numerator of the V. A. FRANK-KAMENETSKIJ, M. A. RUMSH and A. ].
right side of the equation should be raised to the power KOiVIKOV. An X-ray camera for the investigation of
0-5. Thus the equation should read: crystals with and without faces (KRON-1).
1 ~/(sin~0 - sin 40) Short communications
= 1--2 (sin20-- sin40) " (19)
B. K. VAJ~SHTEJN and A. N. LOBACH~.V. On the establish-
ment of the character of the electron scattering (dy-
K~qstallografiya namic or kinematic) in structure determinations by
electron diffraction.
Volume 1, Part 4, (1956)
Articles N. V. BELOV. On the one-dimensional infinite crystallo-
graphic groups.
German Stepanovich Zhdanov (On his fiftieth birthday). G. G. Lv.M~LEjlv and E. D. DVxOVA. The approximation
A. F. KAPUSTINSKIJ. The dimensions of the atoms and of the centres of two spirals of opposite sign in the
ions of the transuranic elements in crystals. process of crystal growth.
L. P. I(HOLOD~.~:O. The theory of the hysteresis phe- E. A. SHVGAM and L.M. SHKOL'~IKOVA. Investigation
nomena in barium titanate. of the crystal structures of aluminium and chromium
S. A. SE~IILET0V. The electronographic determination of acetylacetonate.
the structure of antimony telluride. I. S. ZHELUD~.V and V. F. PA~VOV. The phase transitions
G. A. Kcl~ov and Z. G. PINSKER. On the nature of amor- and the domain structure of barium titanate at 120 ° C.
phous antimony. and 5° C.
M. V. KLASSEN-I~EKLJUDOVA and A.A. URUSOVSKAJA. L. G. CX~_E~WSOVA. The question of the nature of the
The influence of a state of non-uniform stress on the colour centres in smoky quartz.
mechanism of plastic deformation of the halogenides S. S. KVITXA. A monochromator with a plane crystal for
of thallium and caesium. the BSV-4 tube.
B o o k s Received
The undcrmentioned works have been received by the Editors. Mention here does not preclude review at a later date.
E l e m e n t s of X - r a y Diffraction. B y B. D. CULLITY. O r d e r - D i s o r d e r P h e n o m e n a . By E. W. ELCOCK.
Pp. xiv + 514 with m a n y figs. and tables. Reading, Pp. ix + 166 with m a n y figs. L o n d o n : Methuen;
Massachusetts: Addison-Wesley. 1956. Price 810.00. New York: Wiley. 1956. Price l l s .
Th~orie et T e c h n i q u e de la R a d i o c r i s t a l l o - E l e m e n t a r y C r y s t a l l o g r a p h y . B y M. J. BUERGER.
g r a p h i e . B y A. GUINIER. Pp. xviii + 736 with 350 Pp. xxiii + 528 with m a n y figs. New Y o r k : Wiley.
figs. and m a n y tables. Paris: Dunod. 2nd ed. 1956. L o n d o n : Chapman and Hall. 1956. Price $ 8-75; 70s.
Price 9,500 fr.
S y n t h e t i c P o l y p e p t i d e s . By C.H. BAMFORD, A.
Les D i s l o c a t i o n s . B y J. FRIEDEL. Pp. v i i + 3 1 4 with ELLIOTT and W. E. HANBY. Pp. x i i i + 4 4 5 with m a n y
m a n y figs. Paris: Gauthier-Villars. 1956. Price figs. and tables. :New York: Academic Press; London :
3,500 fr., $10.20; bound 3,800 ft., $11.05. Academic Books. 1956. Price $10.00.
