This year sees the centenary of the foundation of the Dominican sisters of Newcastle, Natal (South Africa), now based at Bushey Heath on the outskirts of London. A cause of rejoicing and of thanks to God for all that the sisters have been and done, but also for asking why we should be having such a celebration at all. Why was this religious institute founded only 100 years ago, when the history of the Dominican order as a whole goes back to the 13th century? Throughout the world, there are 158 autonomous congregations of sisters, with 35,000 professed members and 950 novices at the last count, while there is one international institute of the brethren, comprising nearly fifty provinces and forty vicariates, numbering some 7000 men, a thousand of whom are in formation. Why is there so much fragmentation amongst the sisters when the brothers have maintained, relatively speaking, a great degree of unity in their structure? It is not as if there were no sisters before the massive expansion of the numbers of women religious in the 19th century. Marie Poussepin, recently beatified, started what was recognisably a congregation which she put under the patronage of St Dominic 300 years ago. At the time of St Dominic, there were groups of women who were not following a specific rule, some later becoming enclosed monasteries and others, monasteries of the third order. Why is there not the organic connection between the convents of the Dominican sisters today and these forebears, as there is between the medieval convents of brothers and those of today?