On the Addition of Residue Classes.

S. PILLAI

On Conies Connected with Four or More Lines

. F. C. AULUCK

Fixation of the Aromatic Double Bonds in the Coumarin Ring
System..

S. RANGASWAMI AND T. R. SESHADRI

The Hydroxyl Frequency in the Raman Spectra of Acids and Acid
Salts.

C.S.VENKATEBWARAN

The Reciprocity Theorem in Colloid Optics and its Generalisation

.R. S. KRISHNAN

Light-Scattering and Other Allied Physical Properties of Ordinary
and Heavy Water .

S. BHAGAYANTAM AND B. SUNDARA RAMA. RAO

Magnetic Anisotropy of Naturally Occurring Substances. III. Wood
and Its Constituents.

.P. NILAKANTAN

The Physical Identity of Enantiomers. Part V. The Relation
between Concentration and Viscosity of Solutions of d~, 1- and
dfl-Forms of Camphor, Iso-nitrosocamphors, Camphorquinone,
Camphoric Acid and Sodium Camphorate.

BAWA KARTAR SINGH

On the Miquel-Clifford Configuration ..

. A.NARASINGA RAO

Theory of the Indian Musical Drums—Part I.

.
.K. NAGABHIJSHANA RAO

On the Summability of the Conjugate Series of Fourier Series

P. L. BHATNAUAR

Reciprocity Theorem in Colloid Optics. (Case of Orientated
Particles).

.R. S. KRISHNAN

Studies on Light-Scattering in Emulsions. Part I. Dilute Simple
Emulsions...

R. S. KRISHNAN

Transverse Waves in Canals.

B. R. SETH

Colourimetric Estimation of Nitrate in the Presence of Nitrite

.
..G-. V. L. NARASIMHA MU.RTY

A Theory of Contact Angles .

S. GURIJRAJA Doss AND BASETTR SANJIVA RAO

Ideal Theory of the Abelian Group-Algebra.

T. VENKATARAYUDU

Studies in Three Component Systems. Part I. Systems Composed
of Sulphuric Acid, Water and either Zinc Sulphate or
Magnesium Sulphate .

N. K. JOSHI AND S. C. DEVADATTA

Studies in Three Component Systems. Part II. The System
Composed of Zinc Sulphate, Magnesium Sulphate and Water

N.K. JOSHI AND S. C. DEVADATTA

The Raman Spectra of Some Inorganic Compounds .

.C. S. VENKATESWARAN

Through a Railway Window .

A. NARASINGA RAO

Dispersion of Acoustic Velocity in Liquids .

B. V. RAGHAVENDRA RAO

On a Trigonometric Sum .

S. CHOWLA

Chemical Examination of Erythrina indlca .

P. SURYAPRAKASA RAO, 0. VENKATA RAO AND T. R. SESHADRI

Studies on the Spreading of Certain Substances on a Clean Surface
of Water — Part I . .

L. A. RAMDAS AND P. S. VAIDYANATHAN

Effect of Temperature on the Raman Spectrum of Liquid CC14. Some
Preliminary Considerations .

R. ANANTHAKRISHNAN

Effect of Oblique Refraction at the Prism Surfaces on the Relative
Intensities of Raman Lines

. A. VEERABHADRA RAO

Chemistry of B-Aryl-Glutaconic Acids. Part IV. c-Acetylation of
B-aryl-glutaconic Anhydrides: Derivatives of a-Aceto-B-aryl-
glutaconic Acids .

. G-. R. GOGTE

A Study of the Raman Effect in Sodium Nitrate.

P. PATTABHIRAMAYYA

The Dispersion and Optical Anisotropy of Molecular Oxygen in
Relation to Its Absorption Spectrum .

. P. PATTABHIRAMAYYA

Specific Heats of Liquids in Relation to Raman Effect Data

.
S. BHAGAVANTAM

The Raman Spectrum and Constitution of Pentaerythritol

. P. G. N. NAYAR

On a Problem of the Tetrahedron .

K. VENKATACHALIENGAR

Derivatives of l-Hydroxy-2-Naphthoic Acid. Part IV. Compounds
Derived from 4-Nitro-l-Hydroxy~2-Naphthoic Acid and Its
Methyl Ether .

S. N. RAO

The Electro-Static Forces and the Elasticity Constants -

B. Y. OKE

C-Alkyl Resorcinols. Part III. A Direct Synthesis of Rhizonaldehyde

. R. C. SHAH AND B. V. SAMANT

A Note on Narasinga Rao's Problem Relating to Tetrahedra

.K. S. K. IYENGAR

The Volume of a Tetrahedron, the Areas of the Faces being Given

.. FAQIR CHAND AULTJCK

Technique of the Painting Process in the Temple of Vijayalaya
Cholisvaram in the Pudukkottai State .

S. PARAMASIVAN

Question of Invariance in the Neutrino Theory of Light

.. B..S. MADHAVA RAO

Reactivity of the Double Bond in Coumarins and Related a : B
Unsaturated Carbonyl Compounds. Part V. Action of Mercuric
Acetate on Cinnamic Acid and Its Derivatives.

.
.S. RANGASWAMI, V, SUBBA RAO AND T. R. SESHADRI

On a Problem relating to a Tetrahedron.

.K. S. K. IYENGAR AND K. V. IYENGAR

Reactivity of the Double Bond in Coumarins and Related a : B
Unsaturated Carbonyl Compounds. Part VI. Action of Mercuric
Acetate on the Methyl Ethers of Coumarinic and Coumaric Acids

S. RANGASWAMI, V. SUBBA RAO AND T. R. SESHADRI

The Expansion of a Function in a Series of Associated Legendre
Functions.

.N. G. SHABDE

The Flame Spectra of Some Aliphatic Halides. Part II. (2) Ethyl
Bromide.

.W. M. VAIDYA

Viscosity and Jelly Formation of Concentrated Sols of Hydrous
Stannic Oxide..

C.H. I. VARADANAM

Biquaternions in Born's Electrodynamics .

B. S. MADHAVA RAO

Eulerian Parameters and Lorentz Transformations.

H. S. SUBBA RAO

Theorems on the Functional Limits of Derivatives of a Function at
Infinity

.K. S, K. IYENGAR

Obituary—Lord Rutherford of Nelson.

H. J. T.

The Condensation of Aldehydes with Amides. Part I. The Con-
densation of Salicylaldehyde .

KANTILAL C. PANDYA AND TEJPAL SINGH SODHI

Condensation of Malonanilic Acid with Aromatic Aldehydes

RUP KISHORE MEHRA AND KANTILAL C. PANDYA

The Condensation of Aldehydes with Amides. Part II. The Con-
densation of Cinnamaldehyde . . .

RUP KISHORE MEHRA AND..KANTILAL C. PANDYA

The Condensation of Aldehydes with Malonic Acid in the Presence
of Organic Bases. Part X. The Condensation of 2 : 4-Resorcyl-
aldehyde .

.KANTILAL C. PANDYA AND TEJPAL SINGH SODHI

On the Amylase from the Indian Water Chestnut (Trapa bispinosa
Roxb.). Part II. Studies with the Purified Powdered Form of
the Enzyme.

DEOKI NANDAN JAIN AND RADHA RAMAN AGARWAL

A Generalisation of Leudesdorf 's Theorem . .

. HANSRAJ GUPTA

A Study of the Systems CuSO4-NiSO4 H2O and CuSO4-CoSQ4~H2O

.T. S. SURATKAR, S. M. MEHTA AND MATA PRASAD

On Linear Transformations of Bounded Sequences-I

K.S.K. IYENGAR

Kinetics of the Reaction between Benzyl Chloride and Formic
Acid .

L, S. HEBLE AND T. S. WHEELEER