The Growth of Cambridge 171 



overcrowded conditions in the old town. The population of the Borough 

 was also increasing rapidly in the nineteenth century (Fig. 41). 



1801 



31 41 



61 71 

 Fig. 41. 



91 1901 II 21 31 



The Population of Cambridge, 1801-1931. 



Tlie break in the curve between 1851 and 1861 is due to the fact that between 1811- 

 51 the University was in Residence on Census Night, and from 1861-1911 in Vacation. 

 In 1921, Census Night was 19/20 June at the begiiming of the Vacation; in 193 1 the 

 Census was taken in Full Term. The population in 1921 and 193 1, within the area of 

 the Borough as extended in 1935, is shown in addition to that of the area of the 

 Borough at the time of the Census. The official estimate of the population of the 

 Borough in 1936 was 76,760; and in 1938, including the "overspill" beyond the 

 Borough boundary, the population is about 90,000. I am indebted to Dr J. A. Venn 

 for these later figures. 



THE NINETEENTH CENTURY 



Fig. 39 shows the area built over between the publication of the plan of 

 WiUiam Cunstance in 1798 and that of Richard Rowe in 1858. North of 

 the river there was a small extension to the south-west of Casde HUl, but 

 the striking growth of the town was southward and eastward. A large 

 area on the Intermediate Terrace gravels, on either side of the central 

 depression of the Downing site, was built upon during this period. Beyond 



