1892.] by the Injection of sterilized Vibrio Metschnikovi. 313 



rule only a slight increase in the number of lymphocytes present 

 can be observed. After two days the blood still exhibits the same 

 increased number of leucocytes. At the end of a week a certain 

 amount of leucocytosis is still present, though the excess appears, 

 in some of the few cases examined at this period, to consist to a 

 great extent of the smaller lymphocytes. 



(4) Changes in the bactericidal power of the serum. Blood 

 taken from a rabbit during the diminution stage of the number of 

 leucocytes present, yields serum having less power of killing the 

 Vibrio Metschnikovi than is normal. Blood taken as soon as 

 leucocytosis has appeared yields serum which exerts a bactericidal 

 action on this microbe which may be two or three times as great 

 as that possessed by serum from an ordinary rabbit. It is note- 

 worthy that this increase is not proportional to the increase in the 

 number of leucocytes present. Blood taken twenty -four to forty- 

 eight hours after injection yields serum which possesses a bacteri- 

 cidal power for Vibrio Metschnikovi far above the normal. In one 

 experiment a given volume of serum was found to be able to kill 

 about 60 times as many microbes as could be killed by the same 

 quantity of normal serum. 



(4) Note on the Method of Fertilisation in Ixora. By J. C. 

 Willis, BA., "Frank Smart" Student in Botany, Gonville and 

 Caius College. 



In Ixora salicifolia, D.C, the flowers are massed together in 

 large corymbs, and thus rendered very conspicuous. A ring-shaped 

 nectary upon the epigynous disc secretes honey, which is protected 

 from rain and from short-lipped insects by the corolla-tube, whose 

 length is 30 mm. and diameter about 1*5 mm. The anthers 

 dehisce in the bud, introrsely, shedding their pollen upon the 

 style, whose stigmas are tightly closed together, and thus protected 

 from the pollen. When the flower opens, the stamens bend 

 outwards and downwards until the anthers are below the rim of 

 the corolla, when they usually fall off altogether. The style 

 presents the pollen to insects visiting the flower. After the lapse 

 of about twenty-four hours the stigmas separate from one another, 

 and the flower is now in its second stage. The stigmas do not 

 roll back so far as to ehect autogamy. 



A similar mechanism appears to occur in /. coccinea, and, so 

 far as can be judged from dried specimens, in many other species 

 of the srenus. 



