Volume 1, Issue 7
January 1935, pages 325-404
pp 325-339 January 1935
pp 340-348 January 1935
The embryo sac ofSagittaria sagittifolia L. follows the same lines of development as described by me forLimnophyton andSagittaria guayanensis, and by Dahlgren forAlisma plantago, Damasonium alisma, Elisma natans, Echinodorus ranunculoides, E. macrophyllus andSagittaria sagittifolia. The only important fact that has been overlooked by Prof. Dahlgren is the division of the two chalazal nuclei of the four-nucleate embryo sac. Sometimes one, and rarely both of these divide, thus producing three or four nuclei in the chalazal end of the embryo sac respectively. One of these always functions as the lower polar nucleus while the remaining two or three are the antipodal nuclei which may sometimes organise into definite cells.
pp 349-358 January 1935
The following parasites of Indian birds found in Gôa are described or recorded:—
Herodias intermedias Wagler: aGiardia abundant also in the intestine and which will be described later on;Plasmodium herodiadis n. sp.;Hæmoproteus herodiadis n. sp?; aMicrofilaria.
Gallinula chloropus L.Plasmodium gallinulæ n. sp.
Machlolophus xanthogenys (Vogors):Hæmoproteus machlolopi (Plimmer, 1912).
Chloropsis aurifrons davidsoni Baker:Plasmodium chloropsidis (Scott, 1925);Leucocytozoon chloropsidis n.sp.; aMicrofilaria.
pp 359-375 January 1935
pp 376-380 January 1935
Examination of the intestines of several specimens of the common wall-lizardHemidactylus flavoviridis (Ruppel) revealed the presence of two species of Nematodes:
Thubunæa asymmetrica (Baylis, 1930), recorded fromMabuya maculilabris (Gray), Uganda, but not recorded so far from this host and from India;
Thelandros hemidactylus sp. nov. a new species of the genusThelandros Wedl, 1862. A key to the species of the genusThelandros is given.
pp 381-404 January 1935
Injection of minute quantities of certain organic extracts into mature sunflower plants led to not only better growth but also greatly increased flowering and seeding. The best results were obtained in the case of plants receiving extract of yeast or farmyard manure: the total yield of flower and seed was nearly tripled and the ratio of seed to the rest of the plant nearly doubled as compared with the untreated (control) plants. Dried blood was comparatively ineffective. Injection into tender plants did not lead to any significant improvement in yield.
Comparative trials with inorganic salts which were fed directly to pot- or plot-cultured French beans or barley did not lead to any marked improvement, more satisfactory results being obtained by applying the same salts (though in larger quantities) to the soil. In the latter case, the beneficial effects could be traced to increased assimilation and better general development rather than to any alteration in the ratio of seed (pod or grain) to the rest of the plant.
The practical significance of the above and other observations has been discussed.