France: “I believe Sam has gone into hospital again”

[YMCA letter paper]
[On Active Service with the British Expeditionary Force]
British Exped Force
28 June 1917
My Dear Mother
Just a few lines hoping they will find yourself and all at home still enjoying your usual good health as this leaves myself in the same at present.  I am sorry I have been so long in writing to you but I always send you a field card to let you know how I am getting on.  I am getting your letters alright now.  I had a letter from Jennie and she is in good health.  The weather still continues to be fine out here.  Tell Jimmy I am expecting a letter from him to let me know how things are going on.  I think I was telling you how I saw T Moffatt and he is looking alright and was asking for you.  I believe Sam has gone into hospital again.  I expect he will get his discharge soon.  Do you have any word from Jack or does he ever be home?  I had no word from him this long time.  
Well I think this is all now hoping to hear from you soon again.  I will now draw to a close for the present.  
I remain
Your loving son