My correspondent states:
For the past few years I have been working on my own transcription of the Toronto Ontario census for 1861. When the Ancestry.com index and film came online last night I was curious to have a look and found that I could browse the actual film pages.
I was surprised that Ancestry.com only had 8390 images of Toronto, particularly when there were two pages for each folio or household. Thus, Ancestry appears to havecovered only 4195 households in Toronto.
In my inspection I came across one of the pages that the Library & Archives Canada (or its predecessor) used to introduce a ward. This lists the names of the wards and the number of folios used by each:-
St Andrew's 1111
St David's 1460
St George's 489
St James's 1413
St John's 1604
St Lawrence's 749
St Patrick's 1149
This totals 7975 folios.
This infers that at least 3780 households are missing, and since Ancestry has included the introductory and concluding pages around the wards and the divisions within the wards, this must be an under-estimate.
I have inspected Ancestry.com provision sufficiently to know that the whole of St Lawrence's and St Patrick's Wards have been omitted. I am suspicious that a fair section of St Andrew's (divisions 2-4 inclusive) and St John's (divisions 5 and 6) are also missing, but I have not made a complete check on these as yet.