Volume 14, Issue 4
October 1941, pages 1-436
pp 1- October 1941 Erratum
pp 341-358 October 1941
pp 359-383 October 1941
The growth of the sugarcane plant in India - II. Physiological effects of deficiency or excess of added fertilisers upon growth characters, carbohydrate metabolism, yield, and juice quality of sugarcane
pp 384-389 October 1941
Oospore formation in paired cultures with various combinations of six isolates of Phytophthora species were studied.
Three of these isolates belong toP. palmivora and the three others toP. faberi, P. meadii andP. arecae respectively.
P. arecae was found to produce oospores withP. meadii, P. palmivora andP. faberi.
P. arecae therefore falls into Gadd’s “rubber” group andP. meadii into the “cacao” group.
Ashby’s second grouping to accommodateP. arecae andP. meadii is superfluous.
The formation of oospores in combinations ofP. arecae withP. meadii or any one of the members of the “cacao” group lends additional support for merging all these isolates as strains ofPhytophthora palmivora.
pp 390-394 October 1941
The caudal region of the vertebral column inSerpentes can be divided into three sub-regions :anterior caudal, middle caudal andposterior caudal.
The caudal part of the vertebral column ofEryx johnii, as compared to that of other snakes, shows a numerical reduction of the vertebræ, as well as a diminution in the length of their antero-posterior axes. This is due to a shortening and compression of the caudal region, mainly affecting the middle caudal and posterior caudal sub-regions.
The posterior caudal vertebræ inEryx johnii are unique in the whole order. They have bifurcatedneural spines, are devoid ofzygosphenes andzygantra, possessaccessory lateral plates, found nowhere else, have peculiaralar plates developed on the zygapophysial ridges, show parapophysialarticulation, and are furnished with three types ofhœmapophyses.
Two pairs of foramina not recorded hitherto are found to occur in the posterior caudal sub-region of the vertebral column inEryx johnii.
pp 395-411 October 1941
pp 412-426 October 1941
The development of embryo-sac and embryo has been described inSpermacoce hispida andGuettarda speciosa.
The haploid numbers,Spermacoce (n = 28) andGuettarda (n = 22), previously reported, are confirmed. Meiosis is described in some detail.
The development of the strophiole has been traced and it is considered to have little phylogenetic importance.
The suggestion previously made that 11 was the basic number of the family is confirmed by data gathered in this paper.
The evolution of the chromosome numbers in this family is discussed in the light of data known in connection with nucellar evolution. A correlation is established between the two and a few tentative schemes of nucellar and chromosomal evolution suggested.
pp 427-436 October 1941
The results of testing thirty-six derivatives of sulphanilamide of various groups in experimental β-hæmolytic streptococcal and pneumococcal (type 1) infections in mice have been presented. The therapeutic activity of the derivatives with substituents in the (N4)-amino radical of sulphanilamide or sulphanilamido derivatives, appears to depend upon whether or not they can yieldin vivo the latter compounds in adequate concentrations. In the attempts to discover highly active compounds, the study of the derivatives of sulphanilamide with suitable heterocyclic rings substituted at the sulphonamide radical have been made. Of the many such compounds so far tested, the sulphanilamidothiazole derivatives, 13 and 33, and the sulphanilamidopyrimidine derivative, 57, have been found to be of outstanding value. The significant relationship existing between the chemical constitution and chemotherapeutic action has been pointed out.