Defense rests in Dunn case; summary set

              The defense last night rested its case in the Robert Dunn, Jr. knockout drops death trial.
Court was recessed until 10 a, m. Monday, when the state will begin summarizing evidence in its efforts to prove that nightclub owner Carlo Quartararo and B-drinker Lucille Cotta killed Dunn with an overdose of chloral hydrate.
The defense summation will follow immediately after the state's.
Court attaches estimated each summation will take
about six hours.
Dunn, a wealthy Nashville contractor, was found dead early on the morning of Jan. 1 in the Latin Quarter night club, 427 Bourbon, which was then owned by Quar-taraaro. Miss Cotta was employed in the establishment.
The trial last night was -ecessed at 10:30 o'clock, following a legal battle which brought  five medical experts to the stand to testify for the defense.
Their evidence was to the effect that:
 There was no value in tests made by chemists to show whether chloral hydrate was in Dunn's body.
 It was questionable whether chloral hydrate is made more deadly when mixed with liquor.
 The drug has no more harmful effect on diseased heart  than it does on a strong one.DR. BRAUER FIRST
The first of the experts td testify was Dr. Ralph Brauer, toxicolo-gist and pharmacologist at LSU medical school and chief of radiological defense for Louisiana under the civil defense plan. Dr. Brauer said he did not agree that alcohol made chloral hydrade more potent.
He was followed on the witness stand by Dr. Walter J. R. Gamp, toxocologist for the State of Illinois and deputy coroner of Chicago. Dr. Camp claimed there is only one conclusive test to show the presence of chloral hydrate in a body, and that this test was not performed upon Dunn's body.
Dr. John Adriani; assistant professor of surgery and instructor in pharmacology at LSU and head of the anesthescology department at Charity Hospital, disputed the testimony of state medical experts who claimed that Dunn might have been given 10.125 grams of chloral hydrate. Adriani said the state experts examined only a section of Dunn's brain, and then concluded he had been given an approximate dose of the drug.
BLAMES BAD HEART
Dr. Walter K. Aikenhead, associate professor of internal medicine at LSU and a specialist-in- heart disease, said he believed Dunn died of a bad heart and not from chloral hydrate.
Dr. Edmund Connelly, neuro-psychiatrist at DePaul Sanatorium and formerly with the neuro-psychiatric department of New York's Bellevue Hospital, said he had administered chloral hydrate to quell violent drunks and had never harmed them through the use oi the drug.
In his testimony Dr. Brauer flatly contradicted prosecution experts* testimony that alcohol increased the effect of chloral hydrate.
He said this belief was held up to 1930 but experiments made since then show that alcohol actually lessens the drug's effect.
Dr. Brauer also said that on the basis the analyses made by prosecution experts he was not willing to make any estimate of the amount of chloral hydrate in Dunn's body. He said, though, that the drug can get into the system only through the digestive tract and intra-venous injection....