Regarding the second hand, it's possible someone went through and updated some of the cards later - perhaps doing some work trying to figure out patterns of infection/what they could do to limit TB transmission.
Okay, quick guide to the Paris Archives.
The first thing to know about Paris is that Paris "proper" (the area the archives covers) consists of 20 arrondissements (districts), and records are separate for each. If you have an address, you can figure out which to search - I normally either google the street name or look at it on google maps - the postcode will be 750XX where XX is the arrondissement number. A relative from "Paris" may have also lived in various communes (towns) nearby and those records will be in the appropriate departmental (think "county") archives.
For example Chatou, Seine et Oise department, where this man lived is now Chatou, Yvelines department, and is a suburb of Western Paris (today quite affluent).
So back to the archives:
http://canadp-archivesenligne.paris.fr/For BMDS we want "État civil de Paris", the link is "» Consulter l'état civil de Paris"
For records between 1860 and 1902 there are two options:
» accédez aux tables décennales --> consult the ten year indexes (if you don't know exact date). These are images, so you can't just search on a surname unfortunately.
» accédez aux registres d’actes --> see the actual records (if you have exact date and arrondissement)
To find his birth:
» accédez aux registres d’actes
The three fields are:
Type d'acte* : naissance (Type of Act: birth)
Arrondissement* : 8e (district:
Date de l'acte *(jj/mm/aaaa) : 11/11/1893 (Date: dd/mm/yyyy)
"rechercher" = "search"
When the search is returned, click the eye symbol to see the images (new window pops up). Generally, the first line of each act has the date - also the surname is written in the left margin. For the moment I've extracted Georges' record for you, but if you have a number of records to look up it is worth trying to get the hang of it - you only need to recognise a few key words and enough numbers to figure out dates (my actual French is awful, I always say I only know genealogical French!).
This record gives his father (Jules Muller, 49, occupation serrurier/locksmith I thnk), mother (Rodine Scherer, 36), address (Rue Descombes 14) and two witnesses - one is a relative, Jules Muller aged 22, brother of the infant, resident in Toulon (Var) - mariner.
For records before 1860, unfortunately, due to a fire in Paris many records do not survive. An index to the "reconstructed" records is on the site but not the originals. Records after 1902 have not been made public (depends on archives but generally don't expect anything beyond 1912 on French sites).
