( 308 ) 



25 r C. ("summerdays") counted for periods from May Hi 11 ' to June 15 th , 

 June 16 1 ' 1 — July 15 1 ' 1 etc shows fluctuations, which in a large majority 

 of cases agree in sign with those of t he mortality of infants in June, 

 July etc. 



3 rd . If a simple proportionality is assumed between the deviation 

 from the normal of the number of "summerdays" and that of the 

 mortality in a period beginning and ending 15 days later, then for 

 each summerday above or below the normal number the mortality 

 of infants is increased or diminished at Groningen with 5, at Utrecht 

 with 4% of the mean monthly death-rate. 



Chemistry. - - "Action, of potassium hypochlorite on cinnamide", 

 (2 nd communication). By Dr. R. A. Weerman. (Communicated 

 by Prof. S. Hoogewerff). 



It has been stated in a previous communication ') that from cin- 

 namide and potassium hypochlorite was obtained cinnamoylstyrylurea. 



C 8 H 6 C"=C H — P N 



)CO. 

 C,H 6 C H =C H — CO — NH/ 



This proved that in the action of potassium hypochlorite on cin- 

 namide an intramolecular rearrangement of atoms takes place, and 

 that it therefore becomes possible to arrive from a compound with 

 the atomic grouping : 



C e H 5 C = C — C — N 

 at one with the atomic grouping: 



C.H.C = C - N - C. 

 A compound of this structure may be very readily obtained from 

 cinnamide by treating this in methylalcoholic solution with an alkaline 

 solution of potassium hypochlorite. In this way a yield of about 

 70 °/o of the urethane is obtained : 



C,H,C»=C»— N"— C«Vn a ' 



styrylaminoformic methyl ester. 



B.p. 181°— 182° at 14 mm. M. p. 122°— 123 (corr.) 



0,1674 gr. yielded 0,0914 gr. H a and 0,4141 gr. CO, 



0,1733 ., „ 12 cc. N a at 14 and 761 mm. 



Found : 67,45 •/, C; ^J 1 " ', H and 8,12 "/„ N. 



Calculated for ( ' 111 H ll < ) 2 N : 67,76 "/„C; 6,27 % H and 7,91 % N. 



') Proc. 1906, 303. 



