In this order 101 provides like "every Bill shall be read a First Time without motion made or enquiry put and shall be ordered to be read a second occasion on such day like the member in charge of it shall appoint". Whereas no debate takes place.
However the first reading is therefore a mere formality.S
Throughout the second reading the common merits of the Bill may be debated and any indispensable amendments are proposed to the various clauses it enclosed. Each every member wishing to contribute is offered the occasion.