On 21 Jan 2004, Kathleen Kleissler wrote:

> A colleague is wondering if what a student told her can possible be
> true: this person says that he is a twin to an sibling born 4 months
> after him. Does anyone know if this can possibly be true?
> 

Interesting question. I first checked my favourite source for such 
matters, Alan Guttmacher's ancient but still useful bible of 
pregnancy and birth (_Pregnancy, birth and family planning_, 1973). 
Guttmacher says that some twins are born "many weeks or even months 
apart". He cites, without reference, an Australian case where they 
were born 56 days apart. He also says that in these cases the "almost 
infallible rule" is that the woman has a double uterus with a 
pregnancy in each.

Encouraged, I search Google for "double uterus" and "twins", and it 
produced.....Cecil Adams, the Straight Doper, answering the question 
"Can twins be born a month or two apart?". Yes, he says, and he adds 
that not all are cases of double uteri. He mentions the Australian 
case referred to by Guttmacher (which was a double uterus case) and 
(uncharacteristically) even provides a reference to a published 
report of six cases where twin delivery was intentionally delayed, 
one for 93 days.

On the other hand,  your student's claim of 4 months delay does seem 
a tad long to be believed. Adams cites an "informal claim" of 95 days 
as the record. 

Ol' Cec's essay is at http://www.straightdope.com/columns/021108.html

Stephen

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Stephen L. Black, Ph.D.            tel:  (819) 822-9600 ext 2470
Department of Psychology         fax:  (819) 822-9661
Bishop's  University           e-mail: [EMAIL PROTECTED]
Lennoxville, QC  J1M 1Z7
Canada

Dept web page at http://www.ubishops.ca/ccc/div/soc/psy
TIPS discussion list for psychology teachers at
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