Add spaces: HereyoufindthelatesteditionofMahler'scatalogue.

Answer: Here you find the latest edition of Mahler's catalogue.

Add spaces: ThereferencetoHollar'setchingisretained:"viz.thepictureofDeathleadingawayallEstates",butthistimeDugdaledoesn'tsaythathehasfoundtheverses"worthytobeplacedinhisappendix".

Answer: The reference to Hollar's etching is retained: " viz. the picture of Death leading away all Estates ", but this time Dugdale doesn't say that he has found the verses "worthy to be placed in his appendix".

Add spaces: AndIwillmostgladlyspendandbespentforyoursouls.IfIloveyoumoreabundantly,amIlovedtheless?

Answer:
And I will most gladly spend and be spent for your souls. If I love you more abundantly, am I loved the less?