16 Mr E. H. Hankin, On a new result [Nov. ,11, 



Fig. 2. Portion of stem of Cephalandra indica shewing two interior 

 and one exterior fibro- vascular-bundle, a cells dividing to 

 form the cambium. C centre of stem. Si sieve-tubes. P 

 the periphery. 



Fig. 3. Portion of an older stem of Cephalandra indica. c centre of 

 stem. Si sieve-tubes, cam cambium, ph position of interior 

 phloem of two other fibro-vascular-bundles, mr l primary 

 medullary ray, mr 2 secondary medullary ray. 



(3) On the Spinning Apparatus of Geometric Spiders. By C. 

 Warburton, B.A., Christ's College. 



The structure of the external and internal spinning organs of 

 the Epeiridod was described, and the special functions of the 

 several distinct kinds of spinning glands investigated. 



The Ampullaceal glands were shewn to be the sources of the 

 framework and radial lines of the geometric web. The Acinate 

 and Piriform glands are those mainly used in binding up captured 

 insects. 



A Spider's line is not composed of many strands interwoven 

 or coalescent, as has been hitherto believed. It usually consists 

 of two or four non-adherent threads, and when more are present 

 they do not fuse, but remain distinct, although contiguous. 



The foundation line of the spiral consists of two strands only, 

 not adhering on account of their own viscidity, but enveloped in 

 a common viscid sheath which subsequently breaks up into bead- 

 like globules, and which is probably furnished by the aggregate 

 glands. 



(4) A new result of the injection of ferments. By E. H. Han- 

 kin, B.A., St John's College (Junior George Henry Lewes Student). 



The following experiments were performed in Professor Koch's 

 laboratory at the Hygienisches Institut, Berlin. Although the 

 theoretical considerations that led me to perform these experi- 

 ments are by no means proved by them, the results appear to be 

 sufficiently interesting to publish in detail. 



Experiment 1. Three rabbits, Nos. 11, 12, and 13, were inocu- 

 lated with virulent anthrax*. No. 13 served as control and died 

 in 36 hours of typical anthrax. Nineteen hours after inoculation 

 rabbits 11 and 12 were subjected to a further treatment. No. 11 

 had two cubic centimetres of a '1 per cent, solution of trypsin 

 injected into the lateral vein of its ear, and No. 12 had two cc. 

 of a one per cent, solution of pepsin similarly injected -f*. 



* These rabbits were of medium size, No. 11 weighed 855 grammes. 



t The pepsin and trypsin employed were both obtained from Schering's Griine 

 Apotheke, Chaussee Strass, Berlin. In my later experiments I employed some very 

 pure pepsin which I owe to the great kindness of Dr Theodor Weyl. 



