463 Mass. 353 - Appellee Commonwealth Brief - Mass Cases

137.) Mr. Chinn called Ronald Mendes on that date to
see if he could come over to play video games at their
apartment. (Tr. 2: 138.) The person who answered the
phone was pushy and asked Mr. Chinn what he wanted and
what he needed. (Tr. 2: 139.) Mr. Chinn testified
that he told him that he wanted to see if Ronald.Mendes
was home so he could come by and did not ask to buy
drugs, although Chinn did use marijuana and had smoked
marijuana with the defendants. (Tr. 2: 139-140, 142.)
Raymond Mendes called Doctor Alan Wartenberg, who
recounted his extensive training and experience in
addiction treatment. (Tr. 2: 146-152.) Doctor
Wartenberg testified concerning how much cocaine and/or
marijuana his patients reportedly consumed on a daily
basis. (Tr. 2: 152-153.) He testified that his
patients told him they used as much as an ounce of
marijuana or snorted up to an ounce of cocaine over a
twenty-four to forty-eight hour period. ( Tr. 2 : 15 3 . )
Wartenberg testified that he had also spoken with
patients about how they purchased cocaine and marijuana
and had been told that marijuana could be purchased one
joint at a time, in dime bags, and in quarter bags.
(Tr. 2: 154.) He testified that his patient/drug users
claimed they often bought cocaine by the "eight ball"
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